-927

Appears in sequences

• Determinant of the n X n Hankel matrix whose entries are s_2 (i+j), 0 <= i, j < n, where s_2 is the sum of the base-2 bits.at n=40A056886
• Expansion of (1-x)^(-1)/(1-2*x+2*x^3).at n=14A077853
• a(n+3) = a(n) - a(n+1) - a(n+2); a(0) = -5, a(1) = 6, a(2) = 0.at n=28A105580
• a(n) = Sum_{k=0..n} (-1)^(n-k)*(n!/k!)^2*binomial(n,k).at n=4A119401
• G.f.: Sum_{n=-oo..+oo} n * x^n * (1 - x^n)^n.at n=32A291937
• Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of Product_{j>=1} (1-j^(k*j)*x^j)^j in powers of x.at n=19A294808
• Expansion of Product_{k>=1} (1 - k^k*x^k)^k.at n=4A294809
• Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of exp(-Sum_{j>0} sigma_k(j)*x^j/j) in powers of x.at n=25A294947