31048

Appears in sequences

• Number of stacks, or planar partitions of n; also weakly unimodal compositions of n.at n=23A001523
• Bisection of A001523.at n=11A100506
• Number of 6-step left-handed knight's tours (moves only out two, left one) on an n X n board summed over all starting positions.at n=15A187176
• Numbers n such that sigma(n+2) - sigma(n) = n + 2.at n=4A246852
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 139", based on the 5-celled von Neumann neighborhood.at n=35A270280
• Number of integer partitions of n in which the even parts appear as often at even positions as at odd positions.at n=45A300787
• Number of ways of partitioning the set of the first n positive squares into two subsets whose sums differ at most by 1.at n=26A307877
• Number of solutions to +-1^2 +- 2^2 +- 3^2 +- ... +- n^2 = 0 or 1.at n=26A350403
• Number of solutions to +- 1^2 +- 2^2 +- 3^2 +- ... +- n^2 = 1.at n=26A369730