2804880
domain: N
Appears in sequences
- a(n) = floor( binomial(n,9)/10 ).at n=32A011846
- Number of aperiodic necklaces of n beads of 2 colors, 10 of them black.at n=22A032168
- Number of necklaces with 10 black beads and n-10 white beads.at n=23A032195
- Related to enumeration of alkane systems - see reference for precise definition.at n=11A121179