A343797 Numbers k = p + q (p,q prime), where k | (p*q +- 1) for more than 1 pair, (p,q).

24, 48, 60, 84, 120, 132, 144, 168, 204, 210, 216, 240, 264, 276, 280, 300, 312, 330, 336, 360, 384, 396, 408, 420, 440, 456, 480, 504, 510, 540, 570, 600, 624, 630, 660, 672, 696, 720, 744, 780, 792, 840, 864, 870, 924, 960, 1008, 1032, 1044, 1050, 1080, 1140, 1200, 1224, 1230

Offset

1,1

Links

Table of n, a(n) for n=1..55.

Example

24 is in the sequence since 24 = 5+19 = 7+17 = 11+13 where 24|(5*19+1), 24|(7*17+1) and 24|(11*13+1) respectively.

Crossrefs

Cf. A335495.

Sequence in context: A334759 A341296 A338853 * A292354 A257861 A050497

Adjacent sequences: A343794 A343795 A343796 * A343798 A343799 A343800

Keyword

nonn

Author

Wesley Ivan Hurt, Apr 29 2021

Status

approved