Triangle T(n, k) = (k-n)*A000129(k+1) + (3*n-3*k+1)*A000129(k) with T(n,0) = 1, for 0 <= k <= n-1, read by rows.
A117895
Triangle T(n, k) = (k-n)*A000129(k+1) + (3*n-3*k+1)*A000129(k) with T(n,0) = 1, for 0 <= k <= n-1, read by rows.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =1a(4) =3a(5) =3a(6) =1a(7) =4a(8) =4a(9) =8a(10) =1a(11) =5a(12) =5a(13) =11a(14) =19a(15) =1a(16) =6a(17) =6a(18) =14a(19) =26a(20) =46a(21) =1a(22) =7a(23) =7a(24) =17a(25) =33a(26) =63a(27) =111a(28) =1a(29) =8
External references
- oeis: A117895