a(n) = n^5 + n + 1.

Terms

a(0) =1a(1) =3a(2) =35a(3) =247a(4) =1029a(5) =3131a(6) =7783a(7) =16815a(8) =32777a(9) =59059a(10) =100011a(11) =161063a(12) =248845a(13) =371307a(14) =537839a(15) =759391a(16) =1048593a(17) =1419875a(18) =1889587a(19) =2476119a(20) =3200021a(21) =4084123a(22) =5153655a(23) =6436367a(24) =7962649a(25) =9765651a(26) =11881403a(27) =14348935a(28) =17210397a(29) =20511179