54985

Appears in sequences

• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, -1, 1), (-1, 0, 0), (1, 0, -1), (1, 1, 1)}.at n=9A149551
• Expansion of Sum_{k>=0} x^((k+1)^2)/(1-x)^k.at n=63A236310
• Sum over all Motzkin paths of length n of products over all peaks p of (x_p+n*y_p)/y_p, where x_p and y_p are the coordinates of peak p.at n=8A266386
• Main diagonal of A332365.at n=27A332366
• Number of strict compositions of n with alternating parts strictly decreasing.at n=49A342343