[seqfan] Fwd: Your A051217 Nonnegative numbers of the form 6^x-y^2.

[Moshe Levin]

Dear Seqfans, 

Is A051217 (and similars) "well-defined"?

Thanks,
ML 


-------- Пересылаемое сообщение --------
От кого: Moshe Levin <moshe.levin at mail.ru>
Кому: davidwwilson at comcast.net
Дата: 10 ноября 2011, 11:30
Тема: Your A051217 Nonnegative numbers of the form 6^x-y^2. 

 
Dear David,
Is  A051217 (and similars) well-defined?
Are we sure that, e.g., some integer in ]812, 855[ is not expressible as 6^x-y^2? 
Thanks,
ML

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A051217 Nonnegative numbers of the form 6^x-y^2. 
{0, 1, 2, 5, 6, 11, 20, 27, 32, 35, 36, 47, 71, 72, 95, 116, 135, 140, 152, 167, 180, 191, 200, 207, 212, 215, 216, 272, 335, 380, 396, 431, 455, 512, 551, 567, 620, 671, 720, 767, 812, 855, 860, 887, 896, 935, 972, 1007, 1040, 1052, 1071, 1100, 1127, 1152} 
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