40581

Appears in sequences

• (s(n)+s(n+1))/6, where s()=A006521.at n=24A016059
• (s(n)+s(n+1))/18, where s()=A006521.at n=31A016060
• Expansion of g.f.: ( Sum_{n>=0} (-3)^n*(2*n+1)*x^(n*(n+1)/2) )^(-1/3).at n=6A193236
• Sum of positive cranks minus the sum of positive ranks of all partitions of n.at n=47A195012
• Number of nX7 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 1 1 and 1 0 1 vertically.at n=3A208687
• T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 1 1 and 1 0 1 vertically.at n=48A208688
• Number of 4 X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 1 1 and 1 0 1 vertically.at n=6A208690
• Number of 2 X 2 matrices having all terms in {-n,...,0,..,n} and even nonnegative determinant.at n=8A211156
• Balance scale sequence.at n=10A265500
• Number of ways to tile a 3 X n strip with dominoes and L-shaped 5-minoes.at n=12A346054