**a(n) = - a(n-1) - a(n-2) - a(n-3) + 50*(n-4) + 50*a(n-5) + 50*a(n-6) + 50*a(n-7), n >= 8.**

*1, 1, 1, 1, 1, 5, 25, 169, 1, 205, 1225, 8569, 1, 10205, 61225, 428569, 1, 510205*

*1 seqfan posts*

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

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