A156383 - OEIS

A156383

Number of 4X4 arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to n.

1, 6, 10, 6, 7, 22, 22, 6, 10, 28, 32, 22, 12, 28, 48, 22, 7, 44, 54, 28, 32, 54, 44, 22, 22, 58, 96, 58, 18, 86, 112, 28, 10, 74, 92, 86, 51, 50, 108, 54, 32, 108, 130, 58, 44, 130, 96, 44, 12, 82, 174, 116, 54, 92, 186, 74, 48, 106, 102, 116, 74, 114, 160, 106, 7, 164, 224, 88

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OFFSET

0,2

LINKS

Table of n, a(n) for n=0..67.

EXAMPLE

All solutions for n=4

...0.0.0.4...0.0.0.4...0.0.4.0...0.4.0.0...1.1.1.1...4.0.0.0...4.0.0.0

...0.0.4.0...0.4.0.0...0.0.0.4...4.0.0.0...1.1.1.1...0.0.4.0...0.4.0.0

...0.4.0.0...0.0.4.0...4.0.0.0...0.0.0.4...1.1.1.1...0.4.0.0...0.0.4.0

...4.0.0.0...4.0.0.0...0.4.0.0...0.0.4.0...1.1.1.1...0.0.0.4...0.0.0.4

CROSSREFS