a(n) = (11*n + 7)^5.

Terms

a(0) =16807a(1) =1889568a(2) =20511149a(3) =102400000a(4) =345025251a(5) =916132832a(6) =2073071593a(7) =4182119424a(8) =7737809375a(9) =13382255776a(10) =21924480357a(11) =34359738368a(12) =51888844699a(13) =75937500000a(14) =108175616801a(15) =150536645632a(16) =205236901143