

A050289


Zeroless pandigital numbers: numbers containing the digits 19 and no 0's.


21



123456789, 123456798, 123456879, 123456897, 123456978, 123456987, 123457689, 123457698, 123457869, 123457896, 123457968, 123457986, 123458679, 123458697, 123458769, 123458796, 123458967, 123458976
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OFFSET

1,1


COMMENTS

The first 9!=362,880 terms of this sequence are permutations of the digits 19 with a(9!)=987654321. [From Jeremy Gardiner, May 28 2010]
First differences are given in A209280 (for the first 9! terms) or in A219664 (for at least as much initial terms). [M. F. Hasler, Mar 03 2013]
A230959(a(n)) = 0.  Reinhard Zumkeller, Nov 02 2013


LINKS

Table of n, a(n) for n=1..18.
James Grime and Brady Haran, Why 381,654,729 is awesome (2013)
H. Fripertinger, Operate on "9" to display zeroless pandigitals
Eric Weisstein's World of Mathematics, Pandigital Number


CROSSREFS

Cf. A050290.
Sequence in context: A068247 A224780 A180408 * A204140 A175547 A053654
Adjacent sequences: A050286 A050287 A050288 * A050290 A050291 A050292


KEYWORD

nonn,base


AUTHOR

Eric W. Weisstein


STATUS

approved



