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A067129 Numbers n such that sigma(n-3)+sigma(n+3)=sigma(2n). 0
5, 63, 99, 279, 355, 551, 561, 639, 1359, 1915, 2151, 2799, 4311, 8199, 8919, 10915, 12591, 13239, 16265, 16911, 17991, 18999, 20799, 24039, 24471, 28071, 28719, 30519, 33039, 35271, 40671, 43479, 45351, 48879, 51623, 52911, 56799, 60471 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

Conjecture : sequence gives odd values only

CROSSREFS

Cf. A067730.

Sequence in context: A092823 A152031 A111387 * A063079 A112788 A004193

Adjacent sequences:  A067126 A067127 A067128 * A067130 A067131 A067132

KEYWORD

nonn

AUTHOR

Benoit Cloitre (benoit7848c(AT)orange.fr), Feb 18 2002

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Last modified February 14 22:20 EST 2012. Contains 205677 sequences.