A279419 Numbers k from A284919 such that either k-1 or k+1 is in A277688.

0, 2, 4, 6, 28, 58, 62, 80, 82, 88, 112, 118, 124, 128, 148, 152, 164, 166, 178, 190, 208, 212, 214, 224, 238, 242, 248, 250, 268, 284, 290, 292, 296, 298, 308, 320, 322, 326, 328, 332, 338, 346, 358, 368, 380, 388, 392, 398, 406, 410, 418, 422, 430, 434, 440

Offset: 1

Author

Vladimir Shevelev, Apr 11 2017

Keywords

• nonn

Comments

We conjecture that the sequence is infinite. This sequence shows the proximity of A284919 and A277688 based on Goldbach and Lemoine-Levy representations of even and odd numbers respectively.

The differences between the positions of the corresponding terms of A284919 and A277688 are 0,0,0,1,0,2,2,1,1,1,2,3,2,2,2,2,3,1,... .

The differences between these terms are -1,-1,-1,1,-1,-1,1,1,-1,-1,-1,-1,-1,1,-1,1,1,... .

Crossrefs

Cf. A284919, A277688.

Extensions

More terms from Peter J. C. Moses, Apr 11 2017