26944

Appears in sequences

• Quotients associated with A097982.at n=26A098024
• Number of (w,x,y,z) with all terms in {0,...,n} and at least one of these conditions holds: w<R, x<R, y>R, z>R, where R = max{w,x,y,z} - min{w,x,y,z}.at n=12A212753
• Number of (n+1) X (5+1) 0..3 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4 (constant-stress 1 X 1 tilings).at n=11A235286
• Multiply a(n-1) by 2 and drop all 0's.at n=34A242350
• Expansion of chi(q) * chi(-q^9) / (chi(-q) * chi(q^9)) in powers of q where chi() is a Ramanujan theta function.at n=47A261156
• E.g.f. satisfies: A(x) = exp(2*x) * A(-x).at n=8A275764
• Exponential convolution of central polygonal numbers (A000124) with themselves.at n=8A276042
• E.g.f.: (1 - sinh(x)) / (1 - 2*sinh(x)).at n=6A332257
• G.f. A(x) satisfies A(x) = Sum_{n=-oo..+oo} x^(n^2) * (A(x) - x^n)^n/(1 - x^n*A(x))^n.at n=8A380060