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A126700 Twin simili-primes of order 2. 3
5, 8, 28, 31, 148, 151, 281, 284, 419, 422, 718, 721, 778, 781, 839, 842, 916, 919, 1126, 1129, 1199, 1202, 1318, 1321, 1438, 1441, 1486, 1489, 1499, 1502, 1871, 1874, 1979, 1982, 1991, 1994, 2308, 2311, 2518, 2521, 2729, 2732, 3946, 3949, 4126, 4129, 4546, 4549 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

q > p are "twin simili-primes of order 2" if (p, q) are in A123929 and satisfy q - p = 3. Conjecture : this sequence is infinite.

LINKS

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

CROSSREFS

Cf. A123929, A126699.

Sequence in context: A162562 A182543 A026539 * A076593 A219775 A129774

Adjacent sequences:  A126697 A126698 A126699 * A126701 A126702 A126703

KEYWORD

nonn

AUTHOR

Benoit Cloitre, Feb 11 2007

EXTENSIONS

More terms from Amiram Eldar, Dec 20 2019

STATUS

approved

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Last modified January 22 01:28 EST 2022. Contains 350481 sequences. (Running on oeis4.)