81837

Appears in sequences

• a(n) = A000217(A000217(n))-n^2.at n=28A086602
• 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, 0), (0, 1, -1), (0, 1, 1), (1, 0, 0)}.at n=9A150174
• Number of fixed 9-dimensional polycubes with n cells.at n=4A151835
• Numbers k such that k^2+4, k^2+8, and k^2+10 are prime.at n=32A157929
• Index of record values of A339082.at n=31A339173