-1264

Appears in sequences

• Percolation series for directed square lattice.at n=11A006461
• Expansion of (1-x)/(1-2x+6x^2).at n=8A138229
• Expansion of phi(-q) / phi(-q^5) in powers of q where phi() is a Ramanujan theta function.at n=71A138527
• Let A be the infinite lower triangular Toplitz matrix with Sigma(n) in every column; and B the diagonalized, signed variant of A002040 with the rest zeros. Sequence gives the triangle in the lower half of A*B read by rows.at n=52A187566
• Triangle read by rows, coefficients of the Swiss-Knife median polynomials M_{n}(x) in descending order of powers.at n=22A213736
• G.f. satisfies: A(x)^2 = A(x^2)^2 + 4*x.at n=14A223142
• Expansion of eta(q)^9 * eta(q^5)^3 in powers of q.at n=15A227900
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 6", based on the 5-celled von Neumann neighborhood.at n=47A269698
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 22", based on the 5-celled von Neumann neighborhood.at n=39A269718
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 243", based on the 5-celled von Neumann neighborhood.at n=19A271003
• Square array T(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of (1+(k-1)*x) / (1+2*(k-1)*x+((k+1)*x)^2).at n=49A333989
• Column 1 of triangle A370041.at n=17A370154