Square array read by ascending antidiagonals in which row n has g.f. C/(1-n*x*C) where C = (1/2-1/2*(1-4*x)^(1/2))/x = g.f. for Catalan numbers A000108.
A076038
Square array read by ascending antidiagonals in which row n has g.f. C/(1-n*x*C) where C = (1/2-1/2*(1-4*x)^(1/2))/x = g.f. for Catalan numbers A000108.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =2a(6) =1a(7) =3a(8) =5a(9) =5a(10) =1a(11) =4a(12) =10a(13) =14a(14) =14a(15) =1a(16) =5a(17) =17a(18) =35a(19) =42a(20) =42a(21) =1a(22) =6a(23) =26a(24) =74a(25) =126a(26) =132a(27) =132a(28) =1a(29) =7
External references
- oeis: A076038