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A051809 Numbers with nonzero multiplicative digital root 7. 2
7, 17, 70, 71, 107, 117, 170, 171, 257, 275, 527, 572, 700, 701, 710, 711, 725, 752, 1007, 1017, 1070, 1071, 1107, 1117, 1170, 1171, 1257, 1275, 1527, 1572, 1700, 1701, 1710, 1711, 1725, 1752, 2057, 2075, 2157, 2175 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

FORMULA

A051802^-1(7)

CROSSREFS

Part of histogram of A051802.

Sequence in context: A106010 A136192 A118431 * A034054 A120876 A086870

Adjacent sequences:  A051806 A051807 A051808 * A051810 A051811 A051812

KEYWORD

nonn,easy,base

AUTHOR

Dan Hoey (Hoey(AT)AIC.NRL.Navy.Mil), Dec 09 1999

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Last modified February 16 04:47 EST 2012. Contains 205860 sequences.