-2021

Appears in sequences

• Alternating row sums of Sheffer triangle A143496 (4-restricted Stirling2 numbers).at n=7A193684
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 342", based on the 5-celled von Neumann neighborhood.at n=45A269512
• Coefficients in the power series expansion of A(x) = Sum_{n=-oo..+oo} n*(n+1)*(n+2)/6 * x^(3*n) * (1 - x^n)^(n-2).at n=33A357156