-1340

Appears in sequences

• First term in the continued fraction expansion of StieltjesGamma[n].at n=53A066035
• The (n+1)-th term of the n-th differences of the prime sequence.at n=17A229061
• Triangle read by rows: T(n,k) is the coefficient A_k in the transformation of 1 + x + x^2 + ... + x^n to the polynomial A_k*(x+3)^k for 0 <= k <= n.at n=41A248811
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 185", based on the 5-celled von Neumann neighborhood.at n=25A270637
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 187", based on the 5-celled von Neumann neighborhood.at n=23A270676
• Expansion of Product_{j>=1} (1 - x^j)/(1 - x^(4*j))^4.at n=33A286953
• Partial alternating sums of the sigma_2 function: a(n) = Sum_{k=1..n} (-1)^(k+1) * sigma_2(k).at n=25A379921