38721
domain: N
Appears in sequences
- Hexanacci numbers with a(0) = ... = a(5) = 1.at n=19A000383
- 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, 0), (-1, 1, 1), (1, -1, 0), (1, 1, 0)}.at n=9A149292
- a(n) = 80*n^2 + 1.at n=22A158776
- Number of strings of numbers x(i=1..n) in 0..3 with sum i*x(i) equal to n*3.at n=16A184697
- Semiprimes of the form 5*n^2 + 1.at n=28A212707
- Number of set partitions of {1,2,...,n} such that the size of the smallest block is unique.at n=9A224219
- Number of nX6 0..1 arrays with every element unequal to 0, 1, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=7A318543
- Number T(n,k) of partitions of [n] having exactly k blocks of minimal size; triangle T(n,k), n>=0, 0<=k<=n, read by rows.at n=56A372762