150349

Appears in sequences

• Number of partitions of a 2n-set into even blocks.at n=6A005046
• Numerators of coefficients in Taylor series for exp(cos(x)-1).at n=6A047689
• Binomial transform of expansion of exp(cosh(x)), A005046.at n=11A081557
• Triangle read by rows: T(n,k) is the number of set partitions of {1,2,...,n} (or of any n-set) having k blocks of odd size (0<=k<=n).at n=67A124321
• Number of reduced words of length n in the Weyl group A_16.at n=7A161477
• Mahonian numbers T(n,7) (cf. A008302).at n=12A242657
• Number of m-shape set partitions, square array read by ascending antidiagonals, A(m,n) for m, n >= 0.at n=42A260876
• Generalized Bell numbers, square array read by ascending antidiagonals, A(n, k) for n, k >= 0.at n=42A327001