Numerator of coefficient of (-x^2)^n in F(x)*F(-x) where F(x) = Sum_{k>=0} x^k/(k!)^3.

Terms

a(0) =1a(1) =3a(2) =5a(3) =7a(4) =11a(5) =143a(6) =221a(7) =323a(8) =7429a(9) =437a(10) =667a(11) =20677a(12) =899a(13) =33263a(14) =1363783a(15) =2022161a(16) =3065857a(17) =3065857a(18) =162490421a(19) =4391633a(20) =259106347a(21) =385499687a(22) =8965109a(23) =600662303a(24) =907383479a(25) =66238993967a(26) =66238993967a(27) =98733594781