A156399 Number of 9X9 arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to n.

1, 76, 1728, 9712, 34814, 40416, 130456, 149480, 644220, 297215, 1380432, 3924896, 4260776, 4171320, 5913728, 6328576, 17481322, 7436362, 23029656, 61580624, 75335814, 56271108, 62202832, 54904272, 183254724, 62428100, 176105168