50296

Appears in sequences

• Three-quadrant Ferrers graphs that partition n.at n=18A059776
• Triangle read by rows: T(n,0)=1, T(n,n)=(2*n-1)!!+1, T(n,k) = 2*(n-k) * T(n-1,k-1) + 2*(k+1)*T(n-1,k).at n=24A099755
• Number of 4-step left-handed knight's tours (moves only out two, left one) on an n X n board summed over all starting positions.at n=40A187174
• Number of partitions p of n such that (maximal multiplicity of the parts of p) >= (number of distinct parts of p).at n=45A240308
• Numbers of words on {0,1,2,3} having no isolated zeros.at n=9A255813
• O.g.f.: exp( Sum_{n>=1} A256357(n^2)*x^n/n ), where exp( Sum_{n>=1} A256357(n)*x^n/n ) = 1 + Sum_{n>=1} x^(n^2) + x^(2*n^2).at n=30A258656