experimental-projects/oeis-research/N. J. A. Sloane at master · trizen/experimental-projects · GitHub

Name		Name	Last commit message	Last commit date
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Carmichael numbers of special form		Carmichael numbers of special form
Euclid-Mullin sequence: a(1) = 2, a(n+1) is largest prime factor of Product_{k=1..n} a(k) + 1		Euclid-Mullin sequence: a(1) = 2, a(n+1) is largest prime factor of Product_{k=1..n} a(k) + 1
Largest prime factor of (p^p-1) over (p-1) where p = prime(n)		Largest prime factor of (p^p-1) over (p-1) where p = prime(n)
Largest prime factor of concatenation of primes with zeros		Largest prime factor of concatenation of primes with zeros
Least Carmichael number with n prime factors, or 0 if no such number exists		Least Carmichael number with n prime factors, or 0 if no such number exists
Numbers n such that sigma(sigma(n)) = n*k		Numbers n such that sigma(sigma(n)) = n*k
Records in A073053		Records in A073053
Smallest divisor of the Motzkin number not already in the sequence		Smallest divisor of the Motzkin number not already in the sequence
Solution to x = 3*tanh(x)		Solution to x = 3*tanh(x)
Zeros of an alternating sum of Euler totients		Zeros of an alternating sum of Euler totients
Zeros of an alternating sum of primes sequence		Zeros of an alternating sum of primes sequence
a(1)=3, b(n) = Product_{k=1..n} a(k), a(n+1) is the largest prime factor of (b(n)-1)		a(1)=3, b(n) = Product_{k=1..n} a(k), a(n+1) is the largest prime factor of (b(n)-1)
a(n) = largest prime factor of the number with decimal expansion 20305070...0p_n where p_n = n-th prime		a(n) = largest prime factor of the number with decimal expansion 20305070...0p_n where p_n = n-th prime
a(n) is the largest prime factor of 2^p - p^2 where p is the n-th prime		a(n) is the largest prime factor of 2^p - p^2 where p is the n-th prime