Compound filter: a(n) = P(A055881(n), A278236(n)), where P(n,k) is sequence A000027 used as a pairing function.
A286381
Compound filter: a(n) = P(A055881(n), A278236(n)), where P(n,k) is sequence A000027 used as a pairing function.
Terms
- a(0) =2a(1) =5a(2) =16a(3) =12a(4) =67a(5) =9a(6) =16a(7) =23a(8) =436a(9) =80a(10) =1771a(11) =18a(12) =67a(13) =80a(14) =1771a(15) =668a(16) =16111a(17) =48a(18) =277a(19) =302a(20) =7141a(21) =2630a(22) =64621a(23) =14a(24) =16a(25) =23a(26) =436a(27) =80a(28) =1771a(29) =31
External references
- oeis: A286381