A146561 Numbers m with the property that shifting the rightmost digit of m to the left end multiplies the number by 3.

1034482758620689655172413793, 1379310344827586206896551724, 1724137931034482758620689655, 2068965517241379310344827586, 2413793103448275862068965517, 2758620689655172413793103448, 3103448275862068965517241379, 10344827586206896551724137931034482758620689655172413793

Offset

1,1

Links

Seiichi Manyama, Table of n, a(n) for n = 1..245

Wikipedia, Parasitic number.

Formula

From Seiichi Manyama, Aug 22 2017: (Start)

a(7*k - 6) = 3*(10^(28*k) - 1)/29.

a(7*k - 5) = 4*(10^(28*k) - 1)/29.

a(7*k - 4) = 5*(10^(28*k) - 1)/29.

a(7*k - 3) = 6*(10^(28*k) - 1)/29.

a(7*k - 2) = 7*(10^(28*k) - 1)/29.

a(7*k - 1) = 8*(10^(28*k) - 1)/29.

a(7*k) = 9*(10^(28*k) - 1)/29. (End)

Crossrefs

Cf. A146088 (k=2), this sequence (k=3), A146569 (k=4), A146754 (k=5), A291354 (k=6), A291215 (k=7), A291321 (k=8), A291353 (k=9).

Cf. A092697, A097717.

Sequence in context: A053776 A217413 A217428 * A181309 A095448 A105298

Adjacent sequences: A146558 A146559 A146560 * A146562 A146563 A146564

Keyword

nonn,base,easy

Author

N. J. A. Sloane, based on correspondence from William A. Hoffman III (whoff(AT)robill.com), Apr 10 2009

Extensions

More terms from Seiichi Manyama, Aug 22 2017

Status

approved