A278972 Twice the twin primes.

6, 10, 14, 22, 26, 34, 38, 58, 62, 82, 86, 118, 122, 142, 146, 202, 206, 214, 218, 274, 278, 298, 302, 358, 362, 382, 386, 394, 398, 454, 458, 478, 482, 538, 542, 562, 566, 622, 626, 694, 698, 838, 842, 862, 866, 922, 926, 1042, 1046, 1138, 1142, 1198, 1202, 1234, 1238, 1282, 1286

Offset: 1

Author

Omar E. Pol, Dec 02 2016

Keywords

• nonn

Comments

This is one of the sequences found in the pyramid described in A245092. For more information about the pyramid see A237593 and A262626.

Links

• Harvey P. Dale, Table of n, a(n) for n = 1..1000

Crossrefs

Union of A108605 and A176810.

Subsequence of A100484.

Cf. A001097, A001359, A006512, A114907, A237593, A262626.

Programs

Mathematica

2Union[Flatten[Select[Partition[Prime[Range[150]],2,1],#[[2]]-#[[1]]==2&]]] (* Harvey P. Dale, Apr 18 2022 *)

Formula

a(n) = 2 * A001097(n).