1622632573

Appears in sequences

• Fubini numbers: number of preferential arrangements of n labeled elements; or number of weak orders on n labeled elements; or number of ordered partitions of [n].at n=11A000670
• Nearest integer to n!/(2*log(2)^(n+1)).at n=11A034172
• "Stirling-Bernoulli transform" of Jacobsthal numbers.at n=11A105796
• a(n) = Sum_{k>=0} k^(2*n+1)/2^(k+1).at n=5A308865
• Number of achiral loops (necklaces or bracelets) of length n with integer entries that cover an initial interval of positive integers.at n=21A327868
• Number of binary matrices with distinct nonzero rows, a total of n ones and each column with the same number of ones.at n=10A331643
• Square array T(n,k), n>=0, k>=0, read by antidiagonals, where column k is the expansion of e.g.f. 1/(1 - x^k/k! * (exp(x) - 1)).at n=77A355666