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A116271 n times n+9 gives the concatenation of two numbers m and m-3. 4
4, 8600, 9422, 35440, 64552, 73643, 4851411, 5148581, 8784945, 726216462984, 753613723258, 791909893641, 819307153915, 3654754464602947512, 4527063717215234298, 5472936282784765694, 6345245535397052480 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..17.

EXAMPLE

8784945 * 8784954 = 7717533//7717530, where // denotes

concatenation.

CROSSREFS

Cf. A116140, A116264, A116270, A116278.

Sequence in context: A058460 A115050 A072724 * A274551 A257281 A201392

Adjacent sequences:  A116268 A116269 A116270 * A116272 A116273 A116274

KEYWORD

nonn,base

AUTHOR

Giovanni Resta, Feb 06 2006

STATUS

approved

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Last modified October 3 22:17 EDT 2022. Contains 357237 sequences. (Running on oeis4.)