A076569 Greatest prime divisor of 6n+15 (sum of six successive integers).

7, 3, 11, 13, 5, 17, 19, 7, 23, 5, 3, 29, 31, 11, 7, 37, 13, 41, 43, 5, 47, 7, 17, 53, 11, 19, 59, 61, 7, 13, 67, 23, 71, 73, 5, 11, 79, 3, 83, 17, 29, 89, 13, 31, 19, 97, 11, 101, 103, 7, 107, 109, 37, 113, 23, 13, 17, 11, 41, 5, 127, 43, 131, 19, 5, 137, 139, 47, 13, 29, 7

Offset

1,1

Links

Table of n, a(n) for n=1..71.

Mathematica

Table[FactorInteger[6n+15][[-1, 1]], {n, 80}] (* Harvey P. Dale, Aug 20 2014 *)

Crossrefs

Sequence in context: A138859 A257328 A361416 * A061194 A248280 A255772

Adjacent sequences: A076566 A076567 A076568 * A076570 A076571 A076572

Keyword

easy,nonn

Author

Zak Seidov, Oct 19 2002

Status

approved