-5008

Appears in sequences

• Coordination sequence for octagonal tiling is a(n)*sqrt(2) + A103909(n).at n=32A103908
• Irregular triangle, T(n, k) = coefficients of p(x, n), where p(x, n) = (1-2*x)^(n+1) * Sum_{j>=0} j^n*(x/(1-x))^j, read by rows.at n=36A142073
• A triangle related to the a(n) formulas of the rows of the ED4 array A167584.at n=18A167591
• The fourth left hand column of triangle A167591.at n=2A168307
• Triangle read by rows, T(n, k) = Sum_{j=0..n} (-1)^(k-j)*Eulerian1(n, j)* binomial(n-j, n-k) for 0 <= k <= n.at n=39A291977