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A116343 Numbers n such that n times n+1 gives the concatenation of two numbers m and m+8. 4
14, 86, 76983, 714690, 952314, 90438191, 96320544, 32980078899029, 34346653774238, 42816188292273, 42881990066488, 57118009933512, 57183811707727, 65653346225762, 67019921100971, 81321742742210 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..16.

EXAMPLE

96320544 * 96320545 = 92776472//92776480, where // denotes concatenation.

CROSSREFS

Cf. A116172, A116329, A116344, A116348.

Sequence in context: A126482 A206614 A321941 * A259473 A202785 A255535

Adjacent sequences:  A116340 A116341 A116342 * A116344 A116345 A116346

KEYWORD

nonn,base

AUTHOR

Giovanni Resta, Feb 06 2006

STATUS

approved

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Last modified September 24 08:44 EDT 2020. Contains 337317 sequences. (Running on oeis4.)