**Numbers n such that n^2 + n is not of the form x^2 + y^2 + z^2.**

*12, 15, 19, 44, 51, 63, 76, 83, 108, 112, 115, 140, 143, 147, 172, 179, 204, 211, 236*

*1 seqfan posts*

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

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