**Number of the essentially different permutations of the numbers 0 to n such that the sum of adjacent numbers is a square.**

*1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 3, 4, 4, 0, 0, 4, 5, 2, 8, 7, 47, 72, 135, 283, 158*

*1 seqfan posts*

Index of A-numbers in seqfan: by ascending order by month by frequency by keyword

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