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A319809 Numbers k that are equal to 2*k when expressed in base 9 and then interpreted in base 10. 0
7794416, 7816758, 8131871, 8132006, 8152638, 8152650 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..6.

EXAMPLE

8132006 expressed in base 9 is equal to 16264012; 16264012 = 2*8132006.

MATHEMATICA

Select[Range[10^6, 10^7], FromDigits@ IntegerDigits[#, 9] == 2 # &] (* Michael De Vlieger, Oct 11 2018 *)

PROG

(PARI) isok(n) = fromdigits(digits(n, 9), 10) == 2*n; \\ Michel Marcus, Sep 28 2018

CROSSREFS

Cf. A139285.

Sequence in context: A273101 A124416 A320516 * A214194 A205657 A206186

Adjacent sequences:  A319806 A319807 A319808 * A319810 A319811 A319812

KEYWORD

nonn,base,fini,full

AUTHOR

Anton Deynega, Sep 28 2018

STATUS

approved

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Last modified February 21 23:00 EST 2020. Contains 332113 sequences. (Running on oeis4.)