[seqfan] Re: Non-collinear permutations

[Max Alekseyev]

Oh, I see.  A146558 should say "modulo n".
I'll send correction.
Max

On Mon, Jun 21, 2010 at 2:16 PM, Max Alekseyev <maxale at gmail.com> wrote:
> How that's different from A146558 ?
> They seem to have similar titles but different contents.
> Max
>
> On Mon, Jun 21, 2010 at 1:38 PM, Ron Hardin <rhhardin at att.net> wrote:
>>
>> I think I can get one more term...
>>
>> %S A000001 1,2,4,18,56,272,1000,6080,33644,214024,1363836,10877964,75783376,
>> %T A000001 648644300,5765475224,49406530846
>> %N A000001 Number of permutations of 1..n with no three elements collinear
>> %O A000001 1,2
>>
>> It grows a lot slower than n! .
>> ---
>>
>>  rhhardin at mindspring.com
>> rhhardin at att.net (either)
>>
>>
>>
>>
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>