id:A064768 - OEIS Search Results

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Sum of primes dividing the repunit numbers with a prime number of digits [A031974] (with repetition).

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11, 40, 312, 4888, 534888, 265371785, 5365294080, 1111111111111111111, 11111111111111111111111, 77843964391, 57336415063797550469, 2212394296770453025145, 201763709900322803748658482662 (list; graph; listen)

	OFFSET	`1,1`
	CROSSREFS	`Cf. A031974, A001414.` `Sequence in context: A059142 A064798 A056124 this_sequence A135719 A089776 A073626` `Adjacent sequences: A064765 A064766 A064767 this_sequence A064769 A064770 A064771`
	KEYWORD	`nonn`
	AUTHOR	`Jason Earls (zevi_35711(AT)yahoo.com), Oct 18 2001`

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

AT&T Labs Research