A076566 Greatest prime divisor of 3n+3 (sum of three successive integers).

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

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: A132424 A070864 A321790 * A083574 A108025 A192451

Adjacent sequences: A076563 A076564 A076565 * A076567 A076568 A076569

Keyword

easy,nonn

Author

Zak Seidov, Oct 19 2002

Status

approved