a(n) = (10*n + 1)^4.

Terms

a(0) =1a(1) =14641a(2) =194481a(3) =923521a(4) =2825761a(5) =6765201a(6) =13845841a(7) =25411681a(8) =43046721a(9) =68574961a(10) =104060401a(11) =151807041a(12) =214358881a(13) =294499921a(14) =395254161a(15) =519885601a(16) =671898241a(17) =855036081a(18) =1073283121a(19) =1330863361a(20) =1632240801a(21) =1982119441a(22) =2385443281