**a(x) = if one of {4x^2 - 146x + 1373, 4x^2 - 144x + 1459, 4x^2 - 142x + 1301, 4x^2 - 140x + 1877} is prime, then pick that prime in sequence, otherwise pick zero.**

*1373, 1319, 1033, 1493, 853, 839, 593, 1093, 461, 487, 281, 821, 197, 263, 97, 677*

*3 seqfan posts*

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

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