23187

Appears in sequences

• Sum{T(n-k,k)}, 0<=k<=[ n/2 ], T given by A026659.at n=20A026669
• Number of 6 X 6 binary matrices with n ones, with no zero rows or columns, up to row and column permutation.at n=14A056037
• a(n) = 121*n^2 - 38*n + 3.at n=13A157443
• Maximally refined partitions into distinct parts (of any natural number) with largest part n.at n=26A179822
• Number of compositions of n into distinct parts with exactly four descents.at n=20A241723
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 181", based on the 5-celled von Neumann neighborhood.at n=31A270628