A031886 - OEIS

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A031886

Lucky numbers with size of gaps equal to 4 (lower terms).

3

3, 9, 21, 33, 63, 69, 75, 111, 129, 159, 189, 201, 219, 231, 237, 285, 303, 327, 357, 429, 483, 537, 579, 615, 639, 651, 723, 735, 741, 777, 801, 819, 927, 933, 957, 975, 993, 1053, 1101, 1179, 1197, 1245, 1281, 1365, 1455, 1491, 1497, 1563

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

This is to lucky numbers (A000959) as smaller member p of cousin prime pairs (A023200) is to primes (A000040). - Jonathan Vos Post, May 08 2007

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..10000

CROSSREFS

Cf. A000040, A023200.

Sequence in context: A351894 A286590 A061978 * A147458 A169927 A287057

Adjacent sequences: A031883 A031884 A031885 * A031887 A031888 A031889

KEYWORD

nonn

AUTHOR

Patrick De Geest

STATUS

approved