Crystal ball sequence for A_6 lattice.

Terms

a(0) =1a(1) =43a(2) =505a(3) =3067a(4) =12559a(5) =39733a(6) =104959a(7) =242845a(8) =507781a(9) =980407a(10) =1775005a(11) =3047815a(12) =5006275a(13) =7919185a(14) =12127795a(15) =18057817a(16) =26232361a(17) =37285795a(18) =51978529a(19) =71212723a(20) =96048919a(21) =127723597a(22) =167667655