[seqfan] Re: A269254 and A034807

Don Reble djr at nk.ca
Thu Oct 26 06:37:45 CEST 2017


> 123, 724, 2525, 6726, 15127, 30248, ... I think. a(2525) didn't find
> anything in my 20-minute test but I'll point out that a(724) = a(6726) =
> 2, which strikes me as problematic.

> a(724) ... = 2 [does] not fit the pattern as I expected. 

     The pattern is there. I bet 524899 is the only prime in sequence-724.

[ 2] 1 * 524899
[ 8] 725 * 144021200649068755
[12] 524899 * 39571031999226338487852000499
[17] 380026151 * 10872472737020062126372869343231202399299
[22] 275138408425 * 2987303020541801301296497243182786705694900766618755
[27] 199199827673549 * 820786545286299116538162753869638692811926731881098226527826099

-- 
Don Reble  djr at nk.ca



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