G.f. A(x) satisfies: A(x)^2 equals the g.f. of A110649, which consists entirely of numbers 1 through 12.
A112574
G.f. A(x) satisfies: A(x)^2 equals the g.f. of A110649, which consists entirely of numbers 1 through 12.
Terms
- a(0) =1a(1) =3a(2) =0a(3) =2a(4) =0a(5) =3a(6) =-8a(7) =30a(8) =-90a(9) =290a(10) =-930a(11) =3000a(12) =-9696a(13) =31461a(14) =-102420a(15) =334467a(16) =-1095510a(17) =3598464a(18) =-11852026a(19) =39136629a(20) =-129548493a(21) =429817733a(22) =-1429178703a(23) =4761992751a(24) =-15898024868a(25) =53174651133a(26) =-178168302693a(27) =597971203902
External references
- oeis: A112574