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A116116 Numbers n such that n concatenated with n-6 gives the product of two numbers which differ by 2. 5
21, 30, 902406, 959721, 6040059046, 6242406405, 9842410005, 9900249006, 15033519988494, 17250863148969, 22499666270469, 27632040031654, 34182546327286, 37487353123861, 52213551379230, 74230108225630 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

EXAMPLE

9900249006//9900249000 = 9949999500 * 9949999502, where // denotes concatenation.

CROSSREFS

Cf. A116102, A116115, A115431, A116121, A116247.

Sequence in context: A276756 A115433 A116096 * A079394 A112375 A067599

Adjacent sequences:  A116113 A116114 A116115 * A116117 A116118 A116119

KEYWORD

nonn,base

AUTHOR

Giovanni Resta, Feb 06 2006

STATUS

approved

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Last modified November 12 16:45 EST 2019. Contains 329058 sequences. (Running on oeis4.)