A062850 When expressed in base 2 and then interpreted in base 9, is a multiple of the original number.

0, 1, 6, 7, 17, 18, 30, 34, 49, 60, 90, 102, 108, 119, 126, 180, 203, 204, 210, 238, 269, 306, 420, 510, 538, 540, 612, 630, 882, 1020, 1050, 1076, 1314, 1530, 1638, 2040, 2100, 2628, 2711, 3060, 3281, 3570, 3996, 4410, 4573, 6120, 6562, 7097, 7140, 7884, 7992, 8100, 8190, 9146, 9180, 9720

Offset

1,3

Links

Table of n, a(n) for n=1..56.

Example

7 in base 2 is 111, which interpreted in base 9 is 91 = 13*7.

Mathematica

Select[Range[10000], Divisible[FromDigits[IntegerDigits[#, 2], 9], #]&] (* Harvey P. Dale, Jan 04 2011 *)

Crossrefs

Sequence in context: A309481 A308867 A315846 * A139450 A219853 A250196

Adjacent sequences: A062847 A062848 A062849 * A062851 A062852 A062853

Keyword

base,nonn

Author

Erich Friedman, Jul 21 2001

Extensions

Extended by Harvey P. Dale, Jan 04 2011

Offset changed to 1 by Georg Fischer, Mar 03 2023

Status

approved