Recurrence a(n) = a(n-2) + n^M for M=5, starting with a(0)=0, a(1)=1.

Terms

a(0) =0a(1) =1a(2) =32a(3) =244a(4) =1056a(5) =3369a(6) =8832a(7) =20176a(8) =41600a(9) =79225a(10) =141600a(11) =240276a(12) =390432a(13) =611569a(14) =928256a(15) =1370944a(16) =1976832a(17) =2790801a(18) =3866400a(19) =5266900a(20) =7066400a(21) =9351001a(22) =12220032a(23) =15787344a(24) =20182656a(25) =25552969a(26) =32064032a(27) =39901876a(28) =49274400a(29) =60413025