239481
domain: N
Appears in sequences
- Number of permutations of 1..n with displacements restricted to {-5,-4,-3,0,1,2}.at n=16A189588
- a(n) is the number of ways to select an ordered pair of subsets of {2,...,n} such that each pair of elements from different subsets are relatively prime.at n=15A260185
- Number of sets of nonempty words with a total of n letters over 9-ary alphabet.at n=5A292843