-2639

Appears in sequences

• Real part of Gaussian amicable numbers in order of increasing magnitude. See A102925 for the imaginary part.at n=2A102924
• Triangle read by rows: characteristic polynomials of certain matrices, see Mathematica program.at n=29A124040
• Numerators of the rational number triangle R(n, k) = (n^4 - 30*n^2*k^2 + 60*n*k^3 -30*k^4) / (120*n), n >= 1, k = 1, ..., n. This is a regularized Sum_{j >= 0} (k + n*j)^(-s) for s = -3 defined by analytic continuation of a generalized Hurwitz zeta function.at n=57A268919
• Numerators of the rational number triangle R(n, k) = (n^4 - 30*n^2*k^2 + 60*n*k^3 -30*k^4) / (120*n), n >= 1, k = 1, ..., n. This is a regularized Sum_{j >= 0} (k + n*j)^(-s) for s = -3 defined by analytic continuation of a generalized Hurwitz zeta function.at n=62A268919
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 161", based on the 5-celled von Neumann neighborhood.at n=37A270453
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 387", based on the 5-celled von Neumann neighborhood.at n=33A271546
• First term of n-th difference sequence of (floor(r*k)), r = (1+sqrt(5))/2, k >= 0.at n=13A325745
• First term of n-th difference sequence of (floor(r*k)), r = (3+sqrt(5))/2, k >= 0.at n=13A325747