Sum {k = 1..n} tau(k) is a prime, where tau is the Ramanujan tau function (A000594).
2, 3, 39, 97, 172, 177, 200, 203, 318, 332, 345, 500, 519, 527, 651, 660, 722, 865
3 seqfan posts
Sat Oct 23 09:23:54 CEST 2010 [seqfan] Re: CROSSREFS
Sat Oct 23 08:39:06 CEST 2010 [seqfan] Re: CROSSREFS
Sat Oct 23 00:12:52 CEST 2010 [seqfan] CROSSREFS
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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