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.
A286560
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.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =2a(4) =5a(5) =41a(6) =71a(7) =71a(8) =198a(9) =313a(10) =484a(11) =922a(12) =1153a(13) =1201a(14) =2105a(15) =1565a(16) =2588a(17) =4046a(18) =5001a(19) =7443a(20) =7443a(21) =8851a(22) =10671a(23) =19589a(24) =16570a(25) =16935a(26) =22254a(27) =25313a(28) =25313a(29) =25313
External references
- oeis: A286560