[seqfan] Re: Divisibility by primes

Reinhard Zumkeller reinhard.zumkeller at gmail.com
Fri Apr 10 19:56:40 CEST 2015


https://oeis.org/draft/A256786

Best regards
Reinhard

2015-04-10 16:53 GMT+02:00 Lars Blomberg <lars.blomberg at visit.se>:

> Hello,
>
> I find the first few terms to be
> 12, 14, 42, 55, 154, 222, 228, 714, 1122, 1196, 1212, 1414, 2112, 2142,
> 2262, 3355, 4144, 4242, 5335, 5544, 5555, 6162, 9499, 11112, 11144, 11214,
> 11424, 11466, 11622, 11818, 11914, 12222, 12882, 14112, 15554, 16666,
> 21216, 21222, 21252, 21888, 22122, 22212, 22287, 24255, 24444, 25212,
> 41174, 41244, 41412, 44114, 44142, 44226, 44744, 47124, 48944, 53625,
> 55385, 57222, 62166, 62244, 63635, 66222, 66612, 67626, 68666, 69966,
> 72114, 72267, 72777, 75735, 77112, 81282, 84854, 85272, 88122, 88844,
> 99222, 99912, 99935, 111188, 111222, 112122, 112212, 112224, 114114,
> 116116, 118218, 119922, 121122, 121182, 121212, 121422, 121992, 122112,
> 122226, 122616, 124488, 126126, 129444, 141414, 142212, 142422, 142842,
> 144144, 146146, 148428, 154154, 156156, 161226, 161616, 161772, 162162,
> 164164, 166166, 182172, 182286, 188518, 211122, 211128, 211212, 211692,
> 211812, 212112, 212142, 212772, 214242, 216216, 221112, 221214, 221424,
> 221844, 222222, 222255, 222552, 222585, 222612, 224112, 225225, 225522,
> 225555, 226122, 226512, 228228, 228855, 241122, 242214, 242424, 242949,
> 244188, 246246, 252252, 255222, 255255, 255552, 261222, 261612, 262626,
> 264264, 265122,
>
> And
> a[1000] = 11299992
> a[10000] = 555114252
>
> /Lars
>
> -----Ursprungligt meddelande-----
> Från: SeqFan [mailto:seqfan-bounces at list.seqfan.eu] För Eric Angelini
> Skickat: den 10 april 2015 13:02
> Till: Sequence Discussion list
> Ämne: [seqfan] Divisibility by primes
>
>
> Hello SeqFans,
> 12 is divisible by the 1st and the 2nd prime
> 14 is divisible by the 1st and the 4th prime
> 42 is divisible by the 4th and the 2nd prime ...
> Are there many others?
> (yes, an infinity: 222, 222222, 222222222, etc) Best, É.
> Catapulté de mon aPhone
>
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