Irregular triangle: the coefficient [x^k] of the polynomial (1-x)^(2*n-1) * Sum_{s>=0} A001263(n+2*s,2*s+1)*x^s in row n >= 1 and column k >= 0.

A178657

Irregular triangle: the coefficient [x^k] of the polynomial (1-x)^(2*n-1) * Sum_{s>=0} A001263(n+2*s,2*s+1)*x^s in row n >= 1 and column k >= 0.

Terms

    a(0) =1a(1) =1a(2) =3a(3) =1a(4) =15a(5) =15a(6) =1a(7) =1a(8) =43a(9) =161a(10) =105a(11) =10a(12) =1a(13) =96a(14) =855a(15) =1680a(16) =855a(17) =96a(18) =1a(19) =1a(20) =185a(21) =3191a(22) =13387a(23) =17655a(24) =7623a(25) =945a(26) =21a(27) =1a(28) =323a(29) =9570

External references