40271

Appears in sequences

• Expansion of 1 / (1 + x^2 - x^3) in powers of x.at n=58A077961
• Expansion of 1/(1+x^2+x^3).at n=58A077962
• 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, 0, 1), (0, 0, 1), (1, 0, 1), (1, 1, -1)}.at n=8A150569
• 28-gonal pyramidal numbers: a(n) = n*(n+1)*(26*n-23)/6.at n=21A256648
• a(n) = n! - n^2 + 2n - 1.at n=7A372264