-1921

Appears in sequences

• Numerators of poly-Bernoulli numbers B_n^(k) with k=4.at n=5A027647
• Array of coefficients of powers of x^2 for S(2*n,x)^3 with Chebyshev's S polynomials A049310.at n=25A220666
• Alternating sum of 9-gonal (or nonagonal) numbers.at n=33A266086
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 145", based on the 5-celled von Neumann neighborhood.at n=23A270289
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 347", based on the 5-celled von Neumann neighborhood.at n=23A271300