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A004628 Divisible only by primes congruent to 7 mod 8. 0
1, 7, 23, 31, 47, 49, 71, 79, 103, 127, 151, 161, 167, 191, 199, 217, 223, 239, 263, 271, 311, 329, 343, 359, 367, 383, 431, 439, 463, 479, 487, 497, 503, 529, 553, 599, 607, 631, 647, 713, 719, 721, 727, 743 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

CROSSREFS

Sequence in context: A144517 A091531 A036259 * A089199 A014663 A141175

Adjacent sequences:  A004625 A004626 A004627 * A004629 A004630 A004631

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified February 17 07:41 EST 2012. Contains 205998 sequences.