22941
domain: N
Appears in sequences
- COMPOSE primes with natural numbers.at n=8A030282
- Numbers k such that us(k) = primepi(k), where us(k) is the sum of the aliquot unitary divisors of k (A034460), and primepi(k) is the number of primes <= k (A000720).at n=11A037176
- McKay-Thompson series of class 30B for the Monster group with a(0) = 0.at n=38A058613
- a(n) = (n-1)*(n-2)^3 - A003878(n-3), with a(1) = a(2) = 0 and a(3) = 2.at n=33A075681
- Number of narrowly totally normal compositions of n.at n=19A332296