The On-Line Encyclopedia of Integer Sequences (OEIS)

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A166064

Sum of first n terms divides the concatenation of the first n terms.
(history; published version)

#2 by Russ Cox at Fri Mar 30 17:26:30 EDT 2012

AUTHOR

_Zak Seidov (zakseidov(AT)yahoo.com), _, Oct 05 2009

Discussion

Fri Mar 30

17:26

OEIS Server: https://oeis.org/edit/global/139

#1 by N. J. A. Sloane at Tue Jun 01 03:00:00 EDT 2010

NAME

Sum of first n terms divides the concatenation of the first n terms.

DATA

1, 0, 2, 6, 8, 10, 162, 420, 174, 486, 974, 4486, 1794, 20834, 26986, 16098, 19220, 19738, 58362, 60918, 48564, 87476, 38602, 579030, 231612, 587034, 1375080, 6356154, 951846, 1038240, 205702, 2409400, 4039834

OFFSET

1,3

COMMENTS

Based on Eric Angelini's post to seqfan list Sep 29 2009 (see A151995).

Version with a(1)=1, a(n) is smallest nonnegative integer not yet used.

EXAMPLE

(1+0=1)|10, (1+0+2=3)|102, (1+0+2+6=9)|1026, etc.

CROSSREFS

Cf. A151995, A152210.

KEYWORD

base,nonn

AUTHOR

Zak Seidov (zakseidov(AT)yahoo.com), Oct 05 2009

STATUS

approved