Triangle of numbers associated with Genocchi numbers.

Terms

a(0) =1a(1) =3a(2) =3a(3) =17a(4) =25a(5) =17a(6) =155a(7) =259a(8) =259a(9) =155a(10) =2073a(11) =3681a(12) =4289a(13) =3681a(14) =2073a(15) =38227a(16) =70235a(17) =88507a(18) =88507a(19) =70235a(20) =38227a(21) =929569a(22) =1744457a(23) =2302121a(24) =2500393a(25) =2302121a(26) =1744457a(27) =929569a(28) =28820619a(29) =54852531