id:A146980 - OEIS Search Results

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Non-square-free numbers n such that n-1 is prime and n+1 is square.

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8, 24, 48, 80, 168, 224, 360, 440, 728, 840, 1088, 1224, 1368, 1848, 2208, 2400, 3024, 3720, 3968, 4760, 5040, 5624, 5928, 7920, 8648, 10608, 11448, 13688, 14160, 14640, 16128, 17160, 18224, 19320, 21024, 24024, 25920, 28560, 29928, 31328, 33488 (list; graph; listen)

	OFFSET	`1,1`
	PROGRAM	`(MAGMA) [ n: n in [1..35000] \| not IsSquarefree(n) and IsPrime(n-1) and IsSquare(n+1) ]; [From Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Nov 05 2008]`
	CROSSREFS	`Cf. A013929, A049002.` `Sequence in context: A122812 A022763 A033996 this_sequence A028612 A068857 A064225` `Adjacent sequences: A146977 A146978 A146979 this_sequence A146981 A146982 A146983`
	KEYWORD	`nonn`
	AUTHOR	`Giovanni Teofilatto (g.teofilatto(AT)tiscalinet.it), Nov 04 2008`
	EXTENSIONS	`Extended beyond a(6) by Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Nov 05 2008`

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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.

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