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

Offset: 1

Author

Jan.Hagberg(AT)stat.su.se

Keywords

• nonn

Links

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

Programs

Mathematica

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

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

Extensions

Corrected by R. J. Mathar, Oct 08 2011