Number of 5 X 5 pandiagonal magic squares with sum n.

Terms

a(0) =1a(1) =10a(2) =55a(3) =220a(4) =715a(5) =2001a(6) =4995a(7) =11385a(8) =24090a(9) =47905a(10) =90376a(11) =162955a(12) =282490a(13) =473110a(14) =768570a(15) =1215126a(16) =1875015a(17) =2830620a(18) =4189405a(19) =6089710a(20) =8707501a(21) =12264175a(22) =17035525a(23) =23361975a(24) =31660200a(25) =42436251a(26) =56300310a(27) =73983205a(28) =96354820a(29) =124444540