5675670

Appears in sequences

• Triangle of coefficients of Bessel polynomials {y_n(x)}'.at n=33A065931
• Triangle of coefficients of Bessel polynomials {y_n(x)}''.at n=26A065943
• Triangle read by rows: T(n,k) is the sum of the weights of all vertices labeled k at depth n in the Catalan tree (1 <= k <= n+1, n >= 0).at n=38A102625
• Triangle T(n,k) giving number of degree-2n permutations which decompose into exactly k cycles of even length, k=0..n.at n=34A204420