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A116298 n times n+7 gives the concatenation of two numbers m and m+1. 5
6, 699, 776, 790, 867, 42337, 57657, 96883, 44121666, 55878328, 85298137, 36680703009575609347721358493, 63319296990424390652278641501, 69346342454876071597336150481, 81501115172242572470460459683 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..15.

EXAMPLE

85298137 * 85298144 = 72757727//72757728, where // denotes

concatenation.

CROSSREFS

Cf. A116167, A116291, A116297, A116299, A116311.

Sequence in context: A159620 A125535 A343140 * A112637 A289366 A253120

Adjacent sequences:  A116295 A116296 A116297 * A116299 A116300 A116301

KEYWORD

nonn,base

AUTHOR

Giovanni Resta, Feb 06 2006

STATUS

approved

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Last modified May 21 06:36 EDT 2022. Contains 353889 sequences. (Running on oeis4.)