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A054966 Numbers that are congruent to {0, 1, 8} mod 9. 6
0, 1, 8, 9, 10, 17, 18, 19, 26, 27, 28, 35, 36, 37, 44, 45, 46, 53, 54, 55, 62, 63, 64, 71, 72, 73, 80, 81, 82, 89, 90, 91, 98, 99, 100, 107, 108, 109, 116, 117, 118, 125, 126, 127, 134, 135, 136, 143, 144, 145, 152, 153, 154, 161, 162, 163, 170, 171, 172, 179, 180 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

COMMENTS

n=n^3 mod 9 so iterated sum of decimal digits of n and n^3 are equal.

LINKS

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

FORMULA

G.f. x^2*(1+7*x+x^2) / ( (1+x+x^2)*(x-1)^2 ). - R. J. Mathar, Oct 08 2011

CROSSREFS

Cf. A047523.

Sequence in context: A069237 A070480 A135043 * A130881 A048020 A048000

Adjacent sequences:  A054963 A054964 A054965 * A054967 A054968 A054969

KEYWORD

nonn

AUTHOR

Henry Bottomley (se16(AT)btinternet.com), May 24 2000

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Last modified February 17 06:27 EST 2012. Contains 205998 sequences.