Number of n X n arrays of squares of integers with every 3X3 subblock summing to 18.
A159220
Number of n X n arrays of squares of integers with every 3X3 subblock summing to 18.
Terms
- a(0) =4656a(1) =48248a(2) =254088a(3) =939936a(4) =4708356a(5) =18184688a(6) =61848084a(7) =284320904a(8) =1123134900a(9) =4166675112
External references
- oeis: A159220