28805

Appears in sequences

• Spiral sieve using Fibonacci numbers.at n=21A005626
• Sums of groups in A075639.at n=20A075640
• Matrix cube of triangle A113350.at n=16A113365
• Column 1 of triangle A113365, also equals column 1 of A113340^4.at n=4A113366
• G.f.: A(x) = ...o x/(1-x^4) o x/(1-x^3) o x/(1-x^2) o x/(1-x), composition of functions x/(1-x^n) for n = 1,2,3,...at n=11A136751
• 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, 0), (0, 1, 0), (1, 1, -1), (1, 1, 1)}.at n=8A150459