44980

Appears in sequences

• a(n) = n*(5*n^2 - 2)/3.at n=30A004466
• Numbers k such that phi(prime(k) + 1) == 0 (mod k).at n=21A067732
• Table read by rows: T(n,k) = number of k-sided polygons in an equal-armed cross with arms of length n (see Comments in A331456 for definition) for k = 3,4,5,6,7.at n=50A333037
• Number of compositions of 2n into n powers of 2.at n=12A333047
• Number of compositions of n with no adjacent triples (..., x, y, z, ...) where x <= y <= z.at n=21A344615