Number of 2 X 2 matrices with all elements in {0,...,n} with permanent = determinant * n.

Terms

a(0) =1a(1) =12a(2) =25a(3) =57a(4) =81a(5) =141a(6) =169a(7) =259a(8) =297a(9) =413a(10) =441a(11) =621a(12) =625a(13) =825a(14) =873a(15) =1079a(16) =1089a(17) =1403a(18) =1369a(19) =1739a(20) =1729a(21) =2021a(22) =2025a(23) =2507a(24) =2433a(25) =2859a(26) =2905a(27) =3301a(28) =3249a(29) =4029