a(n) = 388962*n^2 - 430416*n + 119071.

Terms

a(0) =77617a(1) =814087a(2) =2328481a(3) =4620799a(4) =7691041a(5) =11539207a(6) =16165297a(7) =21569311a(8) =27751249a(9) =34711111a(10) =42448897a(11) =50964607a(12) =60258241a(13) =70329799a(14) =81179281a(15) =92806687a(16) =105212017a(17) =118395271a(18) =132356449a(19) =147095551a(20) =162612577a(21) =178907527