A046861 Lower members of a "good pair" of the form (k, 2*k +- 1).

1, 7, 11, 31, 41, 49, 109, 127, 139, 143, 151, 173, 179, 203, 217, 397, 491, 511, 521, 539, 547, 589, 599, 683, 749, 803, 929, 989, 2041, 2047, 2107, 2153, 2191, 2219, 2531, 2693, 2723, 2761, 2999, 3661, 3721, 3739, 6199, 6923, 7949

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn
• easy
• nice

Links

• N. G. de Bruijn, Some direct decompositions of the set of integers, Math. Comp., 18 (1964), 537-546.
• Sean A. Irvine, Java program (github)

Crossrefs

Cf. A046862, A000696.

Extensions

Reference gives 45 terms.

More terms from Pab Ter (pabrlos2(AT)yahoo.com), Nov 06 2005

Offset corrected and title improved by Sean A. Irvine, Apr 29 2021