36357

Appears in sequences

• a(n)=a(n-1)*(2^K)+ n*(n+1)/2 ; a(0)=1; K=floor(log_2 n*(n+1)/2).at n=6A136310
• a(n) is the number of permutations of length n that avoid the pattern 321 and the mesh pattern (12, 174) or the same sequence for the mesh pattern (12, 234).at n=12A289587
• E.g.f. satisfies A(x) * log(A(x)) = exp(x * A(x)^3) - 1.at n=5A357011