id:A037287 - OEIS Search Results

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Replace 2n+1 by concatenation of its divisors >1.

+0
1

0, 3, 5, 7, 39, 11, 13, 3515, 17, 19, 3721, 23, 525, 3927, 29, 31, 31133, 5735, 37, 31339, 41, 43, 3591545, 47, 749, 31751, 53, 51155, 31957, 59, 61, 3792163, 51365, 67, 32369, 71, 73, 35152575, 71177, 79, 392781, 83, 51785, 32987, 89, 71391, 33193 (list; graph; listen)

	OFFSET	`0,2`
	EXAMPLE	`Divisors of 15 are 1,3,5,15, so a(7)=3515`
	CROSSREFS	`Sequence in context: A155034 A154544 A087363 this_sequence A163797 A130536 A146972` `Adjacent sequences: A037284 A037285 A037286 this_sequence A037288 A037289 A037290`
	KEYWORD	`nonn,base,easy`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`
	EXTENSIONS	`More terms from Erich Friedman (erich.friedman(AT)stetson.edu).`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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