Triangle read by rows: the almost-Riordan array ( 1/(1-x) | 2/((1-x)*(1+sqrt(1-4*x))), (1-2*x-sqrt(1-4*x))/(2*x) ).
A373744
Triangle read by rows: the almost-Riordan array ( 1/(1-x) | 2/((1-x)*(1+sqrt(1-4*x))), (1-2*x-sqrt(1-4*x))/(2*x) ).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =1a(7) =4a(8) =4a(9) =1a(10) =1a(11) =9a(12) =13a(13) =6a(14) =1a(15) =1a(16) =23a(17) =41a(18) =26a(19) =8a(20) =1a(21) =1a(22) =65a(23) =131a(24) =101a(25) =43a(26) =10a(27) =1a(28) =1a(29) =197
External references
- oeis: A373744