Partial sums of A253090.

Terms

a(0) =1a(1) =10a(2) =18a(3) =50a(4) =66a(5) =154a(6) =170a(7) =274a(8) =290a(9) =426a(10) =498a(11) =810a(12) =866a(13) =1226a(14) =1302a(15) =1770a(16) =1846a(17) =2290a(18) =2446a(19) =3154a(20) =3306a(21) =4234a(22) =4398a(23) =5394a(24) =5550a(25) =6474a(26) =6766a(27) =8082a(28) =8338a(29) =9858