Triangle read by rows, the coefficients of J. L. Fields generalized Bernoulli polynomials.

Terms

a(0) =1a(1) =0a(2) =1a(3) =0a(4) =1a(5) =5a(6) =0a(7) =4a(8) =21a(9) =35a(10) =0a(11) =18a(12) =101a(13) =210a(14) =175a(15) =0a(16) =48a(17) =286a(18) =671a(19) =770a(20) =385a(21) =0a(22) =33168a(23) =207974a(24) =531531a(25) =715715a(26) =525525a(27) =175175a(28) =0a(29) =8640