27610

Appears in sequences

• Sum of all parts of all partitions of n minus the number of partitions of n.at n=22A182724
• Number of 4 X n 0..1 arrays avoiding 0 0 1 and 1 0 1 horizontally and 0 1 0 and 1 0 1 vertically.at n=10A207255
• Number of partitions of n with difference -1 between the number of odd parts and the number of even parts, both counted without multiplicity.at n=47A242691
• Number of subsets of {1,...,n} containing n and having at least one set partition into 5 blocks with equal element sum.at n=11A248114
• a(n) = binomial(n,2)*(2^(n-2) - n + 1).at n=11A342404
• a(n) = 32*n^2 - 40*n + 10.at n=29A343578
• Triangle read by rows. Number T(n, k) of partitions of the multiset [1, 1, 2, 2, ..., n, n] into k nonempty submultisets, for 1 <= k <= 2n.at n=37A358710