21763

Appears in sequences

• a(n) = n^3 - 7*n + 7.at n=27A106734
• 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, 0), (-1, 1, -1), (0, 1, 0), (1, -1, 0), (1, 0, 1)}.at n=8A150191
• 3rd term of continued fraction for sqrt(2)^sqrt(2)^...^sqrt(2) with n sqrt(2)'s.at n=25A198094
• Numbers that are the sum of eight fourth powers in exactly eight ways.at n=36A345840