-1196

Appears in sequences

• Determinant of the n X n matrix whose element (i,j) equals f(|i-j|) where f(n) is 1 if the sum of middle divisors (A071090) > 0, else 0.at n=21A071548
• Inverse of Riordan array (1/(1-x), x/(1-x)^4), A109960.at n=24A109962
• Partial sums of A128379.at n=6A128378
• Triangle T(n, k, q) = (1-q^n)*( binomial(n, k) - 1 ) + 1, with q = 2, read by rows.at n=24A174718
• A symmetrical triangle sequence based on:q=1/12;t(n,m,q)=12*(Binomial[n, m]*(1 - q) + (((n + m + 1)!/((n + 1)!* m!)) + ((2*n - m + 1)!/((n + 1)!*(n - m)!)))*q).at n=23A174948
• A symmetrical triangle sequence based on:q=1/12;t(n,m,q)=12*(Binomial[n, m]*(1 - q) + (((n + m + 1)!/((n + 1)!* m!)) + ((2*n - m + 1)!/((n + 1)!*(n - m)!)))*q).at n=25A174948
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 163", based on the 5-celled von Neumann neighborhood.at n=25A270456
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 406", based on the 5-celled von Neumann neighborhood.at n=41A271888
• Expansion of the series reversion of x/((1 + x)*(1 - x^2)).at n=10A291534