56870

Appears in sequences

• a(n) = (9*n+1)*(9*n+8).at n=26A001534
• McKay-Thompson series of class 30E for Monster.at n=43A058616
• Triangle T(n,k), 0<=k<=n, read by rows given by [1,1,2,1,2,1,2,1,2,1,2,...] DELTA [1,1,0,0,0,0,0,0,0,...] where DELTA is the operator defined in A084938.at n=38A167656
• Numbers n whose sum of divisors equals the sum of divisors of 2n+1.at n=18A272553
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 641", based on the 5-celled von Neumann neighborhood.at n=34A273311
• Solution of the complementary equation a(n) = a(n-1)*b(n-2) - 1, where a(0) = 1, a(1) = 3, b(0) = 2, b(1) = 4.at n=7A294382
• Number of nX5 0..1 arrays with every element equal to 1, 2, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.at n=7A299571
• Number of solutions to +-1^3 +- 2^3 +- 3^3 +- ... +- n^3 = n.at n=33A348892