A080910 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

A080910

Number of numbers that differ from n in decimal representation by exactly one edit-operation: deletion, insertion, or substitution.

18, 27, 27, 27, 27, 27, 27, 27, 27, 27, 46, 45, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 45, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 45, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 45, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 45, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 45, 46, 46

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,1

COMMENTS

a(n) = #{i: LevenshteinDistance(n,i)=1}.

LINKS

Table of n, a(n) for n=0..68.

Michael Gilleland, Levenshtein Distance. [It has been suggested that this algorithm gives incorrect results sometimes. - N. J. A. Sloane]

EXAMPLE

n=42: numbers at Levenshtein distance 1 from 42: {2, 4, 12, 22, 32, 40, 41, 43, 44, 45, 46, 47, 48, 49, 52, 62, 72, 82, 92, 142, 242, 342, 402, 412, 420, 421, 422, 423, 424, 425, 426, 427, 428, 429, 432, 442, 452, 462, 472, 482, 492, 542, 642, 742, 842, 942}, therefore a(42)=46.

CROSSREFS

Sequence in context: A338383 A338385 A220100 * A347826 A036763 A226971

Adjacent sequences: A080907 A080908 A080909 * A080911 A080912 A080913

KEYWORD

nonn,base

AUTHOR

Reinhard Zumkeller, Apr 01 2003

STATUS

approved