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A047407 Numbers that are congruent to {0, 4, 6} mod 8. 0
0, 4, 6, 8, 12, 14, 16, 20, 22, 24, 28, 30, 32, 36, 38, 40, 44, 46, 48, 52, 54, 56, 60, 62, 64, 68, 70, 72, 76, 78, 80, 84, 86, 88, 92, 94, 96, 100, 102, 104, 108, 110, 112, 116, 118, 120, 124, 126, 128, 132, 134, 136 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

LINKS

Index to sequences with linear recurrences with constant coefficients, signature (1,0,1,-1).

FORMULA

a(n) = 2*A004772(n). G.f. 2*x^2*(2+x+x^2) / ( (1+x+x^2)*(x-1)^2 ). - R. J. Mathar, Dec 05 2011

CROSSREFS

Sequence in context: A179852 A110606 A117247 * A090697 A107303 A028876

Adjacent sequences:  A047404 A047405 A047406 * A047408 A047409 A047410

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified February 15 10:06 EST 2012. Contains 205763 sequences.