16941456

Appears in sequences

• An intermediate sequence for counting nonisomorphic circulant directed p^2-graphs, indexed by odd primes p.at n=5A038780
• E.g.f.: A(x,y) = LambertW(x*y*exp(x))/(x*y*exp(x)), as a triangle of coefficients T(n,k) = [x^n*y^k/n! ] A(x,y), read by rows.at n=42A161628
• Triangle read by rows: terms of a binomial decomposition of 1 as Sum(k=0..n)T(n,k).at n=42A244119
• Number of (n+1)X(2+1) 0..2 arrays with nondecreasing sum of every two consecutive values in every row and column.at n=8A250437