Where A098018(k)=n.

Terms

a(0) =2a(1) =34a(2) =22a(3) =238a(4) =506a(5) =945a(6) =1190a(7) =4725a(8) =5474a(9) =6615a(10) =27370a(11) =32175a(12) =46305a(13) =46410a(14) =78936a(15) =158746a(16) =211120a(17) =135135a(18) =139230a(19) =773955a(20) =569400a(21) =867510a(22) =1309620a(23) =675675a(24) =2277600a(25) =3374800a(26) =3759210a(27) =2619240a(28) =4729725a(29) =6721704