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A062922 When expressed in base 4 and then interpreted in base 7, is a multiple of the original number. 0
0, 1, 2, 3, 33, 219, 840, 1055, 4220, 16880, 95322, 178500, 714000, 981540, 1387680, 7676775, 7924262, 12418476, 12419535, 16552116, 19188717 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..20.

EXAMPLE

33 in base 4 is 201, which interpreted in base 7 is 99=3*33

MATHEMATICA

Select[Range[0, 20*10^6], Divisible[FromDigits[IntegerDigits[#, 4], 7], #]&] (* Harvey P. Dale, Nov 22 2015 *)

CROSSREFS

Sequence in context: A066269 A083785 A046487 * A080471 A023184 A114229

Adjacent sequences:  A062919 A062920 A062921 * A062923 A062924 A062925

KEYWORD

base,nonn

AUTHOR

Erich Friedman, Jul 21 2001

EXTENSIONS

More terms from Naohiro Nomoto, Aug 06 2001

STATUS

approved

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Last modified February 23 09:56 EST 2018. Contains 299535 sequences. (Running on oeis4.)