Number of n X n arrays of squares of integers summing to 27 with every element equal to at least one neighbor.
A146521
Number of n X n arrays of squares of integers summing to 27 with every element equal to at least one neighbor.
Terms
- a(0) =0a(1) =36a(2) =25148a(3) =18912868a(4) =9700090280
External references
- oeis: A146521