id:A087195 - OEIS Search Results

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Numbers of the form 1+(1+p)*p^e, p prime and e>0.

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7, 13, 25, 31, 37, 49, 57, 97, 109, 133, 151, 183, 193, 307, 325, 381, 385, 393, 553, 751, 769, 871, 973, 993, 1407, 1453, 1537, 1723, 1893, 2257, 2367, 2745, 2863, 2917, 3073, 3541, 3751, 3783, 4557, 5113, 5203, 5403, 6145, 6321, 6973, 7221 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`a(n) = 1+(1+A025473(k))A000961(k) for some k>1, this k is unique except for n=2: a(2) = 13 = 1+(1+2)2^2 = 1+(1+3)*3^1.`
	EXAMPLE	`p=2, e=7: 1+(1+A000040(1))A000040(1)^7 = 1+(1+2)2^7 = 1+3128 = 385 = a(17);` `p=7, e=2: 1+(1+A000040(4))A000040(4)^2 = 1+(1+7)7^2 = 1+849 = 393 = a(18).`
	CROSSREFS	`Cf. A087196, A008864.` `Sequence in context: A034780 A137165 A137177 this_sequence A031887 A111721 A060455` `Adjacent sequences: A087192 A087193 A087194 this_sequence A087196 A087197 A087198`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), Aug 24 2003`

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Last modified July 24 12:00 EDT 2008. Contains 142294 sequences.

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