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A116306 n times n+9 gives the concatenation of two numbers m and m+2. 4
3349727, 3922992, 6077000, 6650265, 4076746044440402197, 5923253955559597795, 7713109680804038561, 33652275100997044455421, 66347724899002955544571, 74261393963751156983420 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

6650265 * 6650274 = 4422608//4422610, where // denotes

concatenation.

CROSSREFS

Cf. A116175, A116300, A116305, A116313.

Sequence in context: A206511 A238153 A083635 * A257917 A257916 A015408

Adjacent sequences:  A116303 A116304 A116305 * A116307 A116308 A116309

KEYWORD

nonn,base

AUTHOR

Giovanni Resta, Feb 06 2006

STATUS

approved

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Last modified September 19 06:16 EDT 2020. Contains 337177 sequences. (Running on oeis4.)