Triangle of triangular binomial coefficients, read by rows, where column k has the g.f.: 1/(1-x)^((k+1)*(k+2)/2) for k >= 0.
A098568
Triangle of triangular binomial coefficients, read by rows, where column k has the g.f.: 1/(1-x)^((k+1)*(k+2)/2) for k >= 0.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =1a(6) =1a(7) =6a(8) =6a(9) =1a(10) =1a(11) =10a(12) =21a(13) =10a(14) =1a(15) =1a(16) =15a(17) =56a(18) =55a(19) =15a(20) =1a(21) =1a(22) =21a(23) =126a(24) =220a(25) =120a(26) =21a(27) =1a(28) =1a(29) =28
External references
- oeis: A098568