Triangle T(n,k) read by rows: the coefficient [x^k] of the series (1-x)^(2n-1)*Sum_{l>=0} A001263(n+3*l,3*l+1)*x^l, in row n>=1 with exponents k>=0.
A178658
Triangle T(n,k) read by rows: the coefficient [x^k] of the series (1-x)^(2n-1)*Sum_{l>=0} A001263(n+3*l,3*l+1)*x^l, in row n>=1 with exponents k>=0.
Terms
- a(0) =1a(1) =1a(2) =7a(3) =1a(4) =1a(5) =45a(6) =96a(7) =20a(8) =1a(9) =168a(10) =1316a(11) =1730a(12) =420a(13) =10a(14) =1a(15) =481a(16) =9486a(17) =35959a(18) =35959a(19) =9486a(20) =481a(21) =1a(22) =1a(23) =1165a(24) =48103a(25) =395692a(26) =974863a(27) =816025a(28) =226765a(29) =17248
External references
- oeis: A178658