42891
domain: N
Appears in sequences
- a(n) = (2*n - 7)*n^2.at n=29A015242
- Integer part of 7th root of product of first n primes.at n=22A127604
- a(n) = number of 7-digit primes with digit sum n, where n runs through the non-multiples of 3 in the range [2..62].at n=22A178876
- Compound filter (summands of A004001 & summands of A005185): a(n) = P(A286541(n), A286559(n)), where P(n,k) is sequence A000027 used as a pairing function, with a(1) = a(2) = 0.at n=30A286560