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Numbers k such that k concatenated with k-8 gives the product of two numbers which differ by 6.

5

`%I #7 Jul 21 2021 22:46:39
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`%S 9,13,99,103,183,328,528,715,999,1003,6099,9999,10003,13224,40495,
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`%T 99999,100003,106755,453288,999999,1000003,2066115,2975208,9999999,
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`%U 10000003,22145328,28027683,99999999,100000003,110213248,110667555
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`%N Numbers k such that k concatenated with k-8 gives the product of two numbers which differ by 6.
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`%e 999999999//999999991 = 999999997 * 1000000003, where // denotes concatenation.
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`%Y Cf. A116098, A116105, A116107, A115426, A116237.
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`%K nonn,base
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`%O 1,1
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`%A _Giovanni Resta_, Feb 06 2006
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