A154548 Averages of twin prime pairs of A154546.

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

1,1

Links

Table of n, a(n) for n=1..42.

Mathematica

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

Crossrefs

Cf. A154276, A154546, A154547

Sequence in context: A347938 A114837 A328149 * A244384 A290018 A323979

Adjacent sequences: A154545 A154546 A154547 * A154549 A154550 A154551

Keyword

nonn

Author

Vladimir Joseph Stephan Orlovsky, Jan 11 2009

Status

approved