A000145(n) / 8 - (n^5 + 1).

Terms

a(0) =1a(1) =0a(2) =-24a(3) =-32a(4) =108a(5) =275a(6) =-176a(7) =-1056a(8) =45a(9) =3157a(10) =1080a(11) =-6541a(12) =-836a(13) =16839a(14) =2072a(15) =-33824a(16) =1188a(17) =67100a(18) =1672a(19) =-95883a(20) =19162a(21) =161083a(22) =-8208a(23) =-224653a(24) =2707a(25) =371325a(26) =67500a(27) =-520025a(28) =-1188a(29) =870551