a(n) = 1681*n^2 - 756*n + 85.

Terms

a(0) =1010a(1) =5297a(2) =12946a(3) =23957a(4) =38330a(5) =56065a(6) =77162a(7) =101621a(8) =129442a(9) =160625a(10) =195170a(11) =233077a(12) =274346a(13) =318977a(14) =366970a(15) =418325a(16) =473042a(17) =531121a(18) =592562a(19) =657365a(20) =725530a(21) =797057a(22) =871946a(23) =950197a(24) =1031810a(25) =1116785a(26) =1205122a(27) =1296821a(28) =1391882a(29) =1490305