Triangle read by rows: numerators of the almost-Riordan array ( 3*(7 - 4*x + sqrt(1 - 8*x))/(24 - 48*x + 16*x^2 + (3*x - 3)*(1 - 4*x - sqrt(1 - 8*x))) | 24/(24 - 48*x + 16*x^2 + (3*x - 3)*(1 - 4*x - sqrt(1 - 8*x))), (1 - 4*x - sqrt(1 - 8*x))/(8*x) ).
A389706
Triangle read by rows: numerators of the almost-Riordan array ( 3*(7 - 4*x + sqrt(1 - 8*x))/(24 - 48*x + 16*x^2 + (3*x - 3)*(1 - 4*x - sqrt(1 - 8*x))) | 24/(24 - 48*x + 16*x^2 + (3*x - 3)*(1 - 4*x - sqrt(1 - 8*x))), (1 - 4*x - sqrt(1 - 8*x))/(8*x) ).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =4a(4) =2a(5) =1a(6) =2a(7) =13a(8) =6a(9) =1a(10) =31a(11) =37a(12) =97a(13) =10a(14) =1a(15) =68a(16) =433a(17) =545a(18) =229a(19) =14a(20) =1a(21) =637a(22) =712a(23) =9721a(24) =543a(25) =409a(26) =18a(27) =1a(28) =2773a(29) =36208
External references
- oeis: A389706