172042
domain: N
Appears in sequences
- Number of compositions of n which avoid the pattern 112.at n=21A128742
- a(n) is the number of integers that can be represented in a 7-segment display by using only n segments (version A006942).at n=24A350437
- a(n) = denominator of AM(n)-HM(n), where AM(n) and HM(n) are the arithmetic and harmonic means of the first n positive integers.at n=11A368373