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A076289 Numbers of the form (10^{mr}-1)/(10^r-1) for positive integers m, r. 1
1, 11, 101, 111, 1001, 1111, 10001, 10101, 11111, 100001, 111111, 1000001, 1001001, 1010101, 1111111, 10000001, 11111111, 100000001, 100010001, 101010101, 111111111, 1000000001, 1001001001, 1111111111, 10000000001, 10000100001, 10101010101, 11111111111 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

REFERENCES

T. Chinburg and M. Henriksen, Sums of k-th powers in the ring of polynomials with integer coefficients, Acta Arithmetica, 29 (1976), 227-250.

CROSSREFS

Sequence in context: A099821 A193415 A057148 * A117697 A091366 A158051

Adjacent sequences:  A076286 A076287 A076288 * A076290 A076291 A076292

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Nov 06 2002

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Last modified February 16 09:27 EST 2012. Contains 205904 sequences.