Fifth column of triangle A060058.

Terms

a(0) =1385a(1) =50521a(2) =663061a(3) =5162421a(4) =28862471a(5) =127838711a(6) =475638163a(7) =1544454483a(8) =4494470838a(9) =11949575638a(10) =29449955678a(11) =68035028126a(12) =148639284066a(13) =309297261826a(14) =616573557226