-551

Appears in sequences

• a(1) = 0, a(2) = 0; for n > 2, a(n) - a(n-3) - a(n-5) - ... - a(n-p) = n if n is prime, otherwise = 0, where p = largest prime < n.at n=23A002123
• Binomial transform of Moebius sequence.at n=12A104688
• Diagonal sums of Riordan array (1-x-x^2,x(1-x)).at n=25A109266
• Diagonal sums of the Fibonacci related number triangle A110314.at n=46A110315
• Row sums of a number triangle related to the Pell numbers.at n=23A110331
• Diagonal sums of number a triangle related to the Pell numbers.at n=46A110332
• First differences of A000463.at n=47A188652
• Values of n such that L(1) and N(1) are both prime, where L(k) = (n^2+n+1)*2^(2*k) + (2*n+1)*2^k + 1, N(k) = (n^2+n+1)*2^k + n.at n=40A226921
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 57", based on the 5-celled von Neumann neighborhood.at n=13A270078
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 81", based on the 5-celled von Neumann neighborhood.at n=13A270101
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 229", based on the 5-celled von Neumann neighborhood.at n=13A270949
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 414", based on the 5-celled von Neumann neighborhood.at n=42A272015
• Expansion of 1/Product_{k>=1} (1 + k!*x^k).at n=6A292279
• Dirichlet g.f.: zeta(s) / (zeta(s-1) * zeta(s-2)).at n=22A351654
• a(n) = A325977(A228058(n)).at n=31A389217