-2643

Appears in sequences

• Glaisher's function H'(4n+1) (18 squares version).at n=9A002610
• Expansion of g.f. (1-x)(x^2-5x+3)/(x^4-6x^3+13x^2-6x+1).at n=6A105660
• Values of n such that L(7) and N(7) 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=33A226927
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 49", based on the 5-celled von Neumann neighborhood.at n=29A270017