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A116101 Numbers n such that n concatenated with n-8 gives the product of two numbers which differ by 1. 4
40, 54999166056446260156057520, 57975463942945155043148110, 71745828111009107426351428, 75139610610667830220414750, 1640418113875534941913761115401064 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..6.

EXAMPLE

40//32 = 63 * 64, where // denotes concatenation.

CROSSREFS

Cf. A116094, A116102, A116115, A116232.

Sequence in context: A159428 A115482 A111401 * A167265 A214337 A053342

Adjacent sequences:  A116098 A116099 A116100 * A116102 A116103 A116104

KEYWORD

nonn,base

AUTHOR

Giovanni Resta, Feb 06 2006

STATUS

approved

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Last modified April 9 06:59 EDT 2020. Contains 333344 sequences. (Running on oeis4.)