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A028919

Congruent to 0, 6, 10, 12 (mod 14).

0, 6, 10, 12, 14, 20, 24, 26, 28, 34, 38, 40, 42, 48, 52, 54, 56, 62, 66, 68, 70, 76, 80, 82, 84, 90, 94, 96, 98, 104, 108, 110, 112, 118, 122, 124, 126, 132, 136, 138, 140, 146, 150, 152, 154, 160, 164, 166, 168, 174, 178, 180, 182, 188, 192, 194, 196, 202, 206, 208, 210, 216, 220, 222, 224, 230, 234, 236

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

LINKS

Table of n, a(n) for n=1..68.

Index entries for linear recurrences with constant coefficients, signature (1,0,0,1,-1).

FORMULA

a(n) = 2*A047328(n). G.f.: 2*x^2*(3+2*x+x^2+x^3) / ( (1+x)*(x^2+1)*(x-1)^2 ). - R. J. Mathar, Oct 08 2011

MATHEMATICA

With[{c=14*Range[0, 20]}, Union[Flatten[{c, c+6, c+10, c+12}]]] (* Harvey P. Dale, Dec 25 2011 *)

CROSSREFS

Cf. A047328.