Number of n X n arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 6.
A156441
Number of n X n arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 6.
Terms
- a(0) =2a(1) =22a(2) =32a(3) =635a(4) =1414a(5) =32990a(6) =130456a(7) =4220548a(8) =36058540a(9) =1814137996a(10) =26532092944
External references
- oeis: A156441