25516

Appears in sequences

• Inverse Euler transform of A000931.at n=49A018243
• a(1)=1. a(n) = a(n-1) + (sum of terms, from among terms a(1) through a(n-1), which are prime or 1).at n=19A104589
• Number of irreducible multiple zeta values at weight n.at n=49A113788
• a(n) = 729*n + 1.at n=34A158397
• Numbers k such that 3^k + 3^4 + 1 is prime.at n=23A168170
• Numbers k such that the periodic part of the continued fraction of sqrt(k) has more ones than any smaller k.at n=35A206579
• Number of partitions of n where the difference between consecutive parts is at most 3.at n=45A238863
• a(n) = Sum_{k=0..n-1} (k+1)*binomial(n,k) * a(k) for n > 0 with a(0) = 1.at n=5A278879
• a(n) is the number of regions formed by n-secting the angles of a nonagon (enneagon).at n=38A335781