id:A081256 - OEIS Search Results

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Greatest prime factor of n^3+1.

+0
5

2, 3, 7, 13, 7, 31, 43, 19, 73, 13, 37, 19, 157, 61, 211, 241, 13, 307, 7, 127, 421, 463, 13, 79, 601, 31, 37, 757, 271, 67, 19, 331, 151, 1123, 397, 97, 43, 67, 1483, 223, 547, 1723, 139, 631, 283, 109, 103, 61, 181, 43, 2551, 379, 919, 409, 2971, 79, 103, 3307, 163 (list; graph; listen)

	OFFSET	`1,1`
	MATHEMATICA	`Table[Max[Transpose[FactorInteger[n^3 + 1]][[1]]], {n, 25}]`
	CROSSREFS	`Cf. A081257, A081258.` `Cf. A096173 n^3+1 is an odd semiprime, A096174 (n^3+1)/(n+1) is prime.` `Sequence in context: A056294 A084423 A068134 this_sequence A084955 A026472 A101739` `Adjacent sequences: A081253 A081254 A081255 this_sequence A081257 A081258 A081259`
	KEYWORD	`easy,nonn`
	AUTHOR	`Jan Fricke (fricke(AT)uni-greifswald.de), Mar 14 2003`
	EXTENSIONS	`More terms from Harvey P. Dale (hpd1(AT)nyu.edu), Mar 22 2003` `More terms from Hugo Pfoertner (hugo(AT)pfoertner.org), Jun 20 2004`

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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.

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