Tree generated by the triangular numbers: a(1) = 1; a(2n) = nontriangular(a(n)), a(2n+1) = triangular(a(n+1)), where triangular = A000217, nontriangular = A014132.
A183079
Tree generated by the triangular numbers: a(1) = 1; a(2n) = nontriangular(a(n)), a(2n+1) = triangular(a(n+1)), where triangular = A000217, nontriangular = A014132.
Terms
- a(0) =1a(1) =2a(2) =3a(3) =4a(4) =6a(5) =5a(6) =10a(7) =7a(8) =21a(9) =9a(10) =15a(11) =8a(12) =55a(13) =14a(14) =28a(15) =11a(16) =231a(17) =27a(18) =45a(19) =13a(20) =120a(21) =20a(22) =36a(23) =12a(24) =1540a(25) =65a(26) =105a(27) =19a(28) =406a(29) =35
External references
- oeis: A183079