31392

Appears in sequences

• Number of partitions of n into parts not of the form 13k, 13k+5 or 13k-5. Also number of partitions with at most 4 parts of size 1 and differences between parts at distance 5 are greater than 1.at n=44A035953
• Triangle: self-converse semigroups of order n with k idempotents.at n=32A058118
• Numbers k such that phi(k) = bigomega(k)*tau(k)^2.at n=35A068540
• Expansion of f(q)*f(q^7)/(f(-q)*f(-q^7)) in powers of q where f() is a Ramanujan theta function.at n=40A123862
• Average of twin prime pairs with multiple and strictly distinct powers.at n=34A177426
• Triangle read by rows: T(n,k) is the number of rooted maps with n edges whose core comprises k edges, 1 <= k <= n.at n=22A318106
• Indices of records in A360519.at n=56A361108
• Index where n first appears in A381597.at n=40A381599