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A116266 n times n+2 gives the concatenation of two numbers m and m-3. 5
7, 7311, 8990, 32523, 67476, 76567, 4891729, 5108270, 8528093, 71588335, 98999900, 399659933006, 600340066993, 723627738226, 877712329767, 998999999000, 3485626998113, 3787100274613, 6212899725386, 6514373001886 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..20.

EXAMPLE

98999900 * 98999902 = 98009803//98009800, where // denotes

concatenation.

CROSSREFS

Cf. A115431, A116252, A116265, A116267, A116273.

Sequence in context: A221628 A220879 A119528 * A179812 A023344 A297050

Adjacent sequences:  A116263 A116264 A116265 * A116267 A116268 A116269

KEYWORD

nonn,base

AUTHOR

Giovanni Resta, Feb 06 2006

STATUS

approved

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Last modified August 14 22:45 EDT 2022. Contains 356122 sequences. (Running on oeis4.)