A062929 Numbers k that, when expressed in base 5 and then interpreted in base 7, give a multiple of k.

0, 1, 2, 3, 4, 3640, 7863, 7894, 8186, 11830, 18200, 39315, 39470, 40930, 59150, 2521602, 3278326, 4167678, 13196470, 17870857, 17992485, 20838390, 36724952, 58516102, 73231902, 89354285, 89962425, 105564531, 200046408, 301764432, 446771425, 449812125, 633387186

Offset

1,3

Links

Table of n, a(n) for n=1..33.

Example

3640 in base 5 is 104030, which interpreted in base 7 is 18200=5*3640.

Mathematica

Select[Range[0, 20*10^6], Divisible[FromDigits[IntegerDigits[#, 5], 7], #]&] (* Harvey P. Dale, Jul 18 2015 *)

Crossrefs

Cf. A062845, A062846, A062847, A062848, A062849, A062850, A062853, A062864, A062865, A062884, A062889, A062891, A062920, A062921, A062922, A062923, A062925, A062928, A062930, A062931, A062934, A062937, A062939, A062942, A062943, A062944.

Sequence in context: A085081 A004910 A120024 * A038105 A143716 A228311

Adjacent sequences: A062926 A062927 A062928 * A062930 A062931 A062932

Keyword

base,nonn

Author

Erich Friedman, Jul 21 2001

Extensions

More terms from Naohiro Nomoto, Aug 06 2001

Offset changed to 1 and a(22)-a(33) from Georg Fischer, Mar 13 2023

Status

approved