Negative of column k=7 sequence of array A103728.

Terms

a(0) =109a(1) =731a(2) =10767a(3) =30149a(4) =163129a(5) =1143211a(6) =1970129a(7) =8122067a(8) =18188839a(9) =26350925a(10) =52385857a(11) =131260323a(12) =295577917a(13) =379875659a(14) =767165717a(15) =1181890569a(16) =1452930119a(17) =2608460321a(18) =3755952517a(19) =6277007703a(20) =11796314207a(21) =15849070099a(22) =18287662313