Number of n X n arrays of squares of integers with every (n-1)X(n-1) subblock summing to 21.
A159408
Number of n X n arrays of squares of integers with every (n-1)X(n-1) subblock summing to 21.
Terms
- a(0) =80a(1) =81970a(2) =198598120a(3) =364613564592
External references
- oeis: A159408