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A084310 a(n)=GCD[p(n)+1,n]. 4
1, 2, 3, 4, 1, 2, 1, 4, 3, 10, 1, 2, 1, 2, 3, 2, 1, 2, 1, 4, 1, 2, 1, 6, 1, 2, 1, 4, 1, 6, 1, 4, 3, 2, 5, 4, 1, 2, 3, 2, 1, 14, 1, 2, 9, 2, 1, 16, 1, 10, 3, 4, 1, 18, 1, 8, 3, 2, 1, 6, 1, 2, 7, 8, 1, 6, 1, 2, 3, 70, 1, 72, 1, 2, 5, 4, 1, 2, 1, 10, 3, 2, 1, 14, 5, 2, 3, 2, 1, 2, 13, 4, 1, 2, 5, 24, 1, 2, 1, 2 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

MATHEMATICA

Table[GCD[Prime[w]+1, w], {w, 1, 128}]

CROSSREFS

Cf. A084309-A084316.

Sequence in context: A195451 A118310 A073057 * A078978 A171171 A159957

Adjacent sequences:  A084307 A084308 A084309 * A084311 A084312 A084313

KEYWORD

nonn

AUTHOR

Labos E. (labos(AT)ana.sote.hu), Jun 13 2003

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Last modified February 14 03:37 EST 2012. Contains 205570 sequences.