id:A063710 - OEIS Search Results

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Numbers n such that e(n) = s(n), where e(n)=eulerphi(sigma(n)+n) and s(n)=sigma(n-eulerphi(n)).

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10, 22, 38, 58, 82, 182, 228, 244, 308, 346, 404, 446, 514, 524, 644, 922, 1020, 1214, 1484, 1522, 1538, 1582, 2104, 2408, 5600, 5924, 7596, 8420, 13352, 13378, 13738, 14686, 15012, 20128, 21272, 27084, 27580, 29312, 37158, 43946, 47284, 47468 (list; graph; listen)

	OFFSET	`1,1`
	PROGRAM	`(PARI) s(n) = sigma(n-eulerphi(n)); e(n) = eulerphi(sigma(n)+n); j = []; for(n = 1, 10^5, if(e(n) == s(n), j = concat(j, n))); j`
	CROSSREFS	`Sequence in context: A017641 A028569 A014367 this_sequence A104867 A079861 A014008` `Adjacent sequences: A063707 A063708 A063709 this_sequence A063711 A063712 A063713`
	KEYWORD	`easy,nonn`
	AUTHOR	`Jason Earls (zevi_35711(AT)yahoo.com), Aug 23 2001`

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.

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