51224

Appears in sequences

• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 149", based on the 5-celled von Neumann neighborhood.at n=41A270319
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 221", based on the 5-celled von Neumann neighborhood.at n=41A270936
• a(n) = 2*a(n-1) - a(n-3) + a(floor(n/2)), where a(0) = 1, a(1) = 1, a(2) = 1.at n=21A298402
• a(n) = 4*(n+1)*(9*n+4).at n=37A304505
• Triangle read by rows: T(n,k) is the number of simple graphs on n unlabeled nodes with k simplical vertices, 0 <= k <= n.at n=47A367145