Number of magic labelings of the prism graph I X C_6 having magic sum n.

Terms

a(0) =1a(1) =20a(2) =167a(3) =867a(4) =3322a(5) =10309a(6) =27410a(7) =64770a(8) =139479a(9) =278674a(10) =523457a(11) =933725a(12) =1594008a(13) =2620411a(14) =4168756a(15) =6444020a(16) =9711165a(17) =14307456a(18) =20656363a(19) =29283143a(20) =40832198a(21) =56086305a(22) =75987814a(23) =101661910a(24) =134442035a(25) =175897566a(26) =227863845a(27) =292474657a(28) =372197252a(29) =469870007