61162
domain: N
Appears in sequences
- a(n) = prime(n) + n^3 + n^2 + 4n - 1.at n=38A060822
- a(0)=0; for n>0, a(n) = 4^n - 2*3^(n-1).at n=8A080643
- 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, 0, -1), (1, 0, 0)}.at n=13A148014
- Number of subsets of {1..n} with two elements (possibly the same) summing to n.at n=16A366131