a(n) = (Sum_{k=0..n-1} (8*k^2+12*k+5)*A244973(k))/n^2.

Terms

a(0) =5a(1) =-5a(2) =-9a(3) =115a(4) =-397a(5) =85a(6) =6625a(7) =-36181a(8) =63915a(9) =377365a(10) =-3357175a(11) =10579245a(12) =12408269a(13) =-295386005a(14) =1383403247a(15) =-1317964405a(16) =-23051599205a(17) =159765455077a(18) =-392146366775