Column 2 of triangle A118032, where column 2 of the matrix square of A118032 forms a bisection of this sequence.
A118035
Column 2 of triangle A118032, where column 2 of the matrix square of A118032 forms a bisection of this sequence.
Terms
- a(0) =1a(1) =3a(2) =6a(3) =15a(4) =24a(5) =57a(6) =84a(7) =192a(8) =270a(9) =567a(10) =780a(11) =1683a(12) =2268a(13) =4392a(14) =5832a(15) =12084a(16) =15876a(17) =29073a(18) =37848a(19) =75753a(20) =98058a(21) =172269a(22) =221400a(23) =430248a(24) =550644a(25) =938784a(26) =1194096a(27) =2272308a(28) =2880324a(29) =4793652
External references
- oeis: A118035