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A146025 Numbers that can be written from base 2 to base 5 using only the digits 0 and 1. 6
0, 1, 82000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Conjectured to be complete. a(4), if it exists, is greater than 10^15. - Charles R Greathouse IV, Apr 06 2012

Checked to 3125 (5^5) base-5 digits in just under 1/2 hour using a minor modification of the PARI program at A230360.  Interestingly, with 5 replaced by 9 and the digits 2 and 3 permitted, it appears the complete set is--somewhat coincidental with this--{0, 1, 2, 3, 8281, 8282, 8283}. - James G. Merickel, Dec 01 2013

LINKS

Table of n, a(n) for n=1..3.

EXAMPLE

82000 = 10100000001010000 (2) = 11011111001 (3) = 110001100 (4) = 10111000 (5).

CROSSREFS

Intersection of A005836, A000695, and A033042.

Cf. A131646, A146027, A230360.

Sequence in context: A134122 A138044 A098187 * A204667 A162184 A230786

Adjacent sequences:  A146022 A146023 A146024 * A146026 A146027 A146028

KEYWORD

bref,fini,full,nonn,base,less

AUTHOR

Daniel Mondot (dmondot(AT)gmail.com), Oct 26 2008

EXTENSIONS

Edited by Charles R Greathouse IV, Nov 01 2009

Search limit extended to astronomical odds by James G. Merickel, Dec 03 2013

STATUS

approved

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Last modified October 25 22:07 EDT 2014. Contains 248558 sequences.