First differences of A057793.

Terms

a(0) =5a(1) =21a(2) =142a(3) =1059a(4) =8360a(5) =68940a(6) =586140a(7) =5096885a(8) =45085903a(9) =404203228a(10) =3663001812a(11) =33489858047a(12) =308457620524