Crystal ball sequence for the A_5 x A_5 lattice.

Terms

a(0) =1a(1) =61a(2) =1441a(3) =17861a(4) =142001a(5) =819005a(6) =3713305a(7) =13980205a(8) =45432805a(9) =131091505a(10) =342981013a(11) =826861993a(12) =1859914733a(13) =3942293993a(14) =7937011013a(15) =15276834025a(16) =28261896025a(17) =50477521525a(18) =87368496025a(19) =147013666525a(20) =241153442041a(21) =386532523301a(22) =606631094081a(23) =933869816501