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A116115 Numbers k such that k concatenated with k-6 gives the product of two numbers which differ by 1. 4
58, 1552909498221642960203840517299022287877411846, 1723404686015903064905313664707396376746205762, 2153694542826970975147295558223788704098018912 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..4.

EXAMPLE

58//52 = 76 * 77, where // denotes concatenation.

CROSSREFS

Cf. A116101, A116116, A116120, A116246.

Sequence in context: A243466 A201988 A116103 * A230852 A104380 A051321

Adjacent sequences:  A116112 A116113 A116114 * A116116 A116117 A116118

KEYWORD

nonn,base

AUTHOR

Giovanni Resta, Feb 06 2006

STATUS

approved

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Last modified September 28 14:14 EDT 2022. Contains 357070 sequences. (Running on oeis4.)