Number of 8X8 arrays of squares of integers, symmetric under 90 degree rotation, with all rows summing to n.

A156397

Number of 8X8 arrays of squares of integers, symmetric under 90 degree rotation, with all rows summing to n.

Terms

    a(0) =1a(1) =12a(2) =90a(3) =276a(4) =426a(5) =480a(6) =870a(7) =1344a(8) =1483a(9) =1836a(10) =3402a(11) =4968a(12) =5154a(13) =5112a(14) =9414a(15) =12552a(16) =9522a(17) =8508a(18) =16116a(19) =20712a(20) =19896a(21) =19200a(22) =27630a(23) =39192a(24) =36876a(25) =24936a(26) =42252a(27) =64764a(28) =58704a(29) =50376

External references