61908

Appears in sequences

• Triangle of binomial(n,k)*(binomial(n+k,k)-binomial(n+k-2,k-1)).at n=42A080721
• Triangle read by rows: T(n,k) is the number of Dyck paths of semilength n having k ascents of length 2.at n=44A102402
• Sum of the asymmetry degrees of all compositions of n with parts in {1,3}.at n=27A276057
• p-INVERT of (1,0,1,0,0,0,0,...), where p(S) = (1 - S)^2.at n=22A291725