24515

Appears in sequences

• Number of set-like molecular species of degree n.at n=22A007649
• Positive integers of the form (6*m^2 + 1)/11.at n=38A179337
• E.g.f. is series reversion of log(1+x)/cosh(x).at n=6A224079
• Triangle read by rows: T(n,k) is the number of bargraphs of semiperimeter n having k levels. A level in a bargraph is a maximal sequence of two or more adjacent horizontal steps; it is preceded and followed by either an up step or a down step.at n=36A273344
• Expansion of g/(1 - x^3*g^3), where g = 1+x*g^2 is the g.f. of A000108.at n=10A391033