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A076566 Greatest prime divisor of 3n+3 (sum of three successive integers). 2
3, 3, 3, 5, 3, 7, 3, 3, 5, 11, 3, 13, 7, 5, 3, 17, 3, 19, 5, 7, 11, 23, 3, 5, 13, 3, 7, 29, 5, 31, 3, 11, 17, 7, 3, 37, 19, 13, 5, 41, 7, 43, 11, 5, 23, 47, 3, 7, 5, 17, 13, 53, 3, 11, 7, 19, 29, 59, 5, 61, 31, 7, 3, 13, 11, 67, 17, 23, 7, 71, 3, 73, 37, 5, 19, 11, 13, 79, 5, 3, 41, 83, 7 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(n) = A006530(A000082(n+1)). - Reinhard Zumkeller, Oct 03 2012

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

MATHEMATICA

FactorInteger[Total[#]][[-1, 1]]&/@Partition[Range[100], 3, 1]  (* Harvey P. Dale, Apr 03 2011 *)

PROG

(Haskell)

a076566 = a006530 . (* 3) . (+ 1)  -- Reinhard Zumkeller, Oct 03 2012

CROSSREFS

Cf. A008585.

Sequence in context: A132450 A132424 A070864 * A083574 A108025 A192451

Adjacent sequences:  A076563 A076564 A076565 * A076567 A076568 A076569

KEYWORD

easy,nonn

AUTHOR

Zak Seidov, Oct 19 2002

STATUS

approved

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Last modified February 17 15:37 EST 2018. Contains 299296 sequences. (Running on oeis4.)