id:A067738 - OEIS Search Results

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Numbers n such that sigma(n)+sigma(sigma(n)) is prime.

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1, 2, 3, 7, 22, 32, 49, 52, 66, 70, 93, 94, 97, 98, 115, 119, 121, 127, 169, 170, 196, 214, 241, 242, 256, 265, 337, 343, 364, 441, 450, 513, 529, 567, 577, 578, 597, 679, 723, 784, 800, 841, 967, 1058, 1225, 1249, 1369, 1444, 1521, 1682, 1731, 1802, 1849 (list; graph; listen)

	OFFSET	`1,2`
	CROSSREFS	`Sequence in context: A001532 A109456 A155745 this_sequence A053966 A010738 A114599` `Adjacent sequences: A067735 A067736 A067737 this_sequence A067739 A067740 A067741`
	KEYWORD	`easy,nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Feb 23 2002`

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Last modified November 25 08:46 EST 2009. Contains 167481 sequences.

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