A175765 Pairs (t,t+8) of 3-almost primes t separated by 8.

12, 20, 20, 28, 42, 50, 44, 52, 68, 76, 70, 78, 102, 110, 116, 124, 117, 125, 130, 138, 164, 172, 174, 182, 182, 190, 222, 230, 230, 238, 236, 244, 238, 246, 258, 266, 282, 290, 284, 292, 310, 318, 325, 333, 366, 374, 402, 410, 404, 412, 410, 418, 418, 426, 426, 434

Offset: 1

Author

Juri-Stepan Gerasimov, Aug 30 2010

Keywords

• nonn
• easy
• less

Comments

Pairs (12,20), (20,28), (42,50) etc, sorted by the smaller member, such that both numbers are members of A014612 and their difference is 8.

Crossrefs

Cf. A014612, A077800, A175612.

Extensions

Corrected (236 replaced by 238, 258, 266 inserted etc.) by R. J. Mathar, Sep 01 2010