First differences of A175113.

Terms

a(0) =1a(1) =364a(2) =7448a(3) =51012a(4) =206896a(5) =620060a(6) =1527624a(7) =3281908a(8) =6373472a(9) =11454156a(10) =19360120a(11) =31134884a(12) =48052368a(13) =71639932a(14) =103701416a(15) =146340180a(16) =201982144a(17) =273398828a(18) =363730392a(19) =476508676a(20) =615680240a(21) =785629404a(22) =991201288a(23) =1237724852