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

%I #12 Apr 29 2021 20:10:27

%S 1,7,11,31,41,49,109,127,139,143,151,173,179,203,217,397,491,511,521,

%T 539,547,589,599,683,749,803,929,989,2041,2047,2107,2153,2191,2219,

%U 2531,2693,2723,2761,2999,3661,3721,3739,6199,6923,7949

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

%H N. G. de Bruijn, <a href="http://dx.doi.org/10.1090/S0025-5718-1964-0167447-9">Some direct decompositions of the set of integers</a>, Math. Comp., 18 (1964), 537-546.

%H Sean A. Irvine, <a href="https://github.com/archmageirvine/joeis/blob/master/src/irvine/oeis/a046/A046861.java">Java program</a> (github)

%Y Cf. A046862, A000696.

%K nonn,easy,nice

%O 1,2

%A _N. J. A. Sloane_

%E Reference gives 45 terms.

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

%E Offset corrected and title improved by _Sean A. Irvine_, Apr 29 2021