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A116251 n times n+1 gives the concatenation of two numbers m and m-5. 4
8, 74, 7249, 7934, 86897, 95988, 7450775, 8912862, 3546363535354546354, 4635454646463635464, 5364545353536364536, 6453636464645453646, 31993591495513432827264, 39229430087220380122376 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..14.

EXAMPLE

8912862 * 8912863 = 7943911//7943906, where // denotes

concatenation.

CROSSREFS

Cf. A116120, A116246, A116252, A116265.

Sequence in context: A220458 A144850 A163970 * A166084 A123661 A288487

Adjacent sequences:  A116248 A116249 A116250 * A116252 A116253 A116254

KEYWORD

nonn,base

AUTHOR

Giovanni Resta, Feb 06 2006

STATUS

approved

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Last modified November 12 14:43 EST 2019. Contains 329058 sequences. (Running on oeis4.)