id:A076724 - OEIS Search Results

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Sum {k = 1..n} tau(k) is a prime, where tau is the Ramanujan tau function (A000594).

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2, 3, 39, 97, 172, 177, 200, 203, 318, 332, 345, 500, 519, 527, 651, 660, 722, 865, 870, 881, 890, 897, 1089, 1091, 1101, 1106, 1156, 1177, 1192, 1205, 1369, 1370, 1393, 1425, 1459, 1466, 1499, 1500, 1503, 1505, 1517, 1519, 1703, 1755, 1779, 1782, 1786 (list; graph; listen)

	OFFSET	`1,1`
	MATHEMATICA	Needs["NumberTheory`Ramanujan`"]; s = 0; Do[s = s + RamanujanTau[n]; If[PrimeQ[s], Print[n]], {n, 1, 10^4}]
	CROSSREFS	`Cf. A000594.` `Sequence in context: A060813 A039820 A153745 this_sequence A080393 A111683 A088984` `Adjacent sequences: A076721 A076722 A076723 this_sequence A076725 A076726 A076727`
	KEYWORD	`nonn`
	AUTHOR	`Robert G. Wilson v (rgwv(AT)rgwv.com), Dec 30 2002`

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Last modified December 4 08:07 EST 2009. Contains 170310 sequences.

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