

A102235


Slowest increasing sequence such that no digit "d" from any a(n) has a copy of itself in a(n+d), left or right.


0



1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 22, 23, 31, 33, 41, 52, 54, 55, 56, 57, 61, 62, 63, 64, 71, 72, 81, 83, 84, 85, 86, 88, 89, 91, 92, 93, 94, 95, 96, 97, 99, 111, 222, 223, 311, 333, 411, 421, 424, 431, 533, 535, 551, 552, 554, 611, 622, 623, 631, 633, 641, 722, 724
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OFFSET

1,2


LINKS

Table of n, a(n) for n=1..63.


EXAMPLE

Take integer [41] in the sequence, for instance : ...22 23 31 33 [41] 52 54 55 56.
The digit "4", jumping 4 integers back, ends on [22] which has no "4"; jumping 4 digits to the right ends on [56] which, again, has no "4". The same can be said for "1" (left > [33]; right >[52])


CROSSREFS

Cf. A102150.
Sequence in context: A076641 A076643 A127204 * A107272 A039228 A161383
Adjacent sequences: A102232 A102233 A102234 * A102236 A102237 A102238


KEYWORD

base,easy,nonn


AUTHOR

Eric Angelini, Feb 18 2005


STATUS

approved



