(Number of 4 X 4 pandiagonal magic squares with distinct positive entries less than n)/384.

Terms

a(0) =1a(1) =3a(2) =8a(3) =15a(4) =29a(5) =48a(6) =80a(7) =121a(8) =182a(9) =260a(10) =367a(11) =497a(12) =673a(13) =886a(14) =1158a(15) =1477a(16) =1875a(17) =2341a(18) =2913a(19) =3570a(20) =4355a(21) =5258a(22) =6323a(23) =7526a(24) =8933a(25) =10515a(26) =12338a(27) =14373a(28) =16697a(29) =19282