Compound filter (2-adic valuation & sum of the divisors): a(n) = P(A001511(n), A000203(n)), where P(n,k) is sequence A000027 used as a pairing function.

A286460

Compound filter (2-adic valuation & sum of the divisors): a(n) = P(A001511(n), A000203(n)), where P(n,k) is sequence A000027 used as a pairing function.

Terms

    a(0) =1a(1) =8a(2) =7a(3) =39a(4) =16a(5) =80a(6) =29a(7) =157a(8) =79a(9) =173a(10) =67a(11) =438a(12) =92a(13) =302a(14) =277a(15) =600a(16) =154a(17) =782a(18) =191a(19) =949a(20) =497a(21) =668a(22) =277a(23) =1957a(24) =466a(25) =905a(26) =781a(27) =1656a(28) =436a(29) =2630

External references