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A109855 Concatenation of the terms gives natural numbers in sequence such that N-th partial concatenation is a multiple of n. 1
1, 2, 3, 456, 78910, 1112, 13141516171819202122, 232425262728, 29303132333435, 3637383940, 4142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Not all the later terms are so big: a(14) = 114 and a(24) = 272, for example. - Joshua Zucker, May 04 2006

LINKS

Table of n, a(n) for n=0..10.

EXAMPLE

123456 is a multiple of 4.

CROSSREFS

Cf. A109856.

Sequence in context: A156986 A066849 A071219 * A306370 A128874 A196070

Adjacent sequences:  A109852 A109853 A109854 * A109856 A109857 A109858

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy, Jul 08 2005

EXTENSIONS

Corrected and extended by Joshua Zucker, May 04 2006

STATUS

approved

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Last modified May 15 03:16 EDT 2021. Contains 343909 sequences. (Running on oeis4.)