A154276 -id:A154276 - cp's OEIS frontend

A154546 Numbers n in A154276.

0, 2, 20, 26, 32, 52, 60, 72, 76, 80, 96, 106, 110, 112, 122, 132, 142, 176, 180, 206, 216, 232, 236, 242, 246, 260, 262, 280, 282, 286, 292, 312, 320, 342, 346, 362, 366, 370, 406, 410, 420, 422, 432, 450, 460, 462, 470, 486, 500, 512, 532, 546, 562, 570, 576

Offset: 1

Vladimir Joseph Stephan Orlovsky, Jan 11 2009

nonn

lst={};Do[If[PrimeQ[p=81*n^2-72*n+17],AppendTo[lst,n]],{n,0,7!}];lst

A154547 Sophie Germain primes of A154276.

Original entry on oeis.org

902501, 10824101, 19096901, 26832401, 40322501, 166926401, 255360401, 309760001, 335622401, 338928101, 404814401, 412090001, 430562501, 441840401, 651270401, 702780101, 885062501, 1006792901, 1029768101, 1160764901

Offset: 1

Vladimir Joseph Stephan Orlovsky, Jan 11 2009

nonn

Cf. A154276, A154546

lst={};Do[If[PrimeQ[p=81*n^2-72*n+17],If[PrimeQ[2*p+1],AppendTo[lst,p]]],{n,8!}];lst

A154548 Averages of twin prime pairs of A154546.

Original entry on oeis.org

60, 72, 180, 282, 312, 420, 432, 462, 570, 642, 810, 1062, 1452, 1620, 2130, 2592, 3252, 3360, 3540, 4050, 4650, 4800, 5640, 5742, 5850, 6090, 6360, 6552, 6792, 7332, 7350, 7560, 7590, 8292, 9042, 9462, 10140, 10530, 10860, 11070, 11172, 11940

Offset: 1

Vladimir Joseph Stephan Orlovsky, Jan 11 2009

nonn

Cf. A154276, A154546, A154547

lst={};Do[If[PrimeQ[p=81*n^2-72*n+17],If[PrimeQ[n-1]&&PrimeQ[n+1],AppendTo[lst,n]]],{n,0,8!}];lst

cp's OEIS Frontend

A154546 Numbers n in A154276.

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A154547 Sophie Germain primes of A154276.

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A154548 Averages of twin prime pairs of A154546.

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Mathematica