Triangle, read by rows, each row n being defined by g.f. Product_{k=1..n} (k + x + 2*k*x^2), for n >= 0.
A322891
Triangle, read by rows, each row n being defined by g.f. Product_{k=1..n} (k + x + 2*k*x^2), for n >= 0.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =2a(5) =3a(6) =9a(7) =6a(8) =8a(9) =6a(10) =11a(11) =42a(12) =45a(13) =84a(14) =44a(15) =48a(16) =24a(17) =50a(18) =227a(19) =310a(20) =717a(21) =620a(22) =908a(23) =400a(24) =384a(25) =120a(26) =274a(27) =1425a(28) =2277a(29) =6165
External references
- oeis: A322891