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A108968 Self-ranked numbers. 0
1, 2, 5, 8, 9, 12, 14, 20, 23, 25, 49, 51, 52, 78, 82, 91, 114, 144, 145, 149, 151, 185, 202, 211, 225, 231, 251, 252, 411, 418, 420, 441, 446, 491, 512, 514, 541, 582, 782, 820, 821, 854, 914, 978, 1144, 1191, 1420, 1441, 1446, 1452, 1491, 1514, 1521, 1854, 1911 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..54.

EXAMPLE

"1" is in the sequence because if you replace each letter of "one" by its rank in the alphabet you get the string 15145 which contains at least a "1".

["3" produces the string 2081855 which contains no "3" -- thus "3" is not a "self-ranked number".]

CROSSREFS

Sequence in context: A174438 A176061 A183234 * A289628 A047387 A063282

Adjacent sequences:  A108965 A108966 A108967 * A108969 A108970 A108971

KEYWORD

base,easy,nonn,word

AUTHOR

Eric Angelini, Jul 26 2005

EXTENSIONS

More terms from Sean A. Irvine, Mar 04 2010

STATUS

approved

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Last modified September 26 21:46 EDT 2020. Contains 337377 sequences. (Running on oeis4.)