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A159356
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Number of n X n arrays of squares of integers with every (n-1)X(n-1) subblock summing to 4
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1
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9, 767, 19252, 182643, 1036981, 4279949, 14199872, 40175697, 100665373, 229182711, 482835464, 954070027, 1786340817, 3194495053, 5490736316, 9117102929, 14685469857, 23026155487, 35246287308, 52799153171, 77565837469
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