id:A109133 - OEIS Search Results

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Numbers n such that (sum of digits)*(number of digits) + 1 is prime.

+0
1

1, 2, 4, 6, 10, 11, 12, 14, 15, 17, 18, 20, 21, 23, 24, 26, 27, 29, 30, 32, 33, 35, 36, 38, 41, 42, 44, 45, 47, 50, 51, 53, 54, 56, 59, 60, 62, 63, 65, 68, 69, 71, 72, 74, 77, 78, 80, 81, 83, 86, 87, 90, 92, 95, 96, 99, 101, 103, 105, 109, 110, 112, 114, 118, 121, 123, 127 (list; graph; listen)

	OFFSET	`1,2`
	EXAMPLE	`1234 is a term because 4*(1+2+3+4)+1 = 41.`
	CROSSREFS	`Cf. A110805.` `Sequence in context: A076246 A100426 A089227 this_sequence A056077 A129630 A026429` `Adjacent sequences: A109130 A109131 A109132 this_sequence A109134 A109135 A109136`
	KEYWORD	`base,easy,nonn`
	AUTHOR	`Jason Earls (zevi_35711(AT)yahoo.com), Aug 17 2005`

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

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