[seqfan] Re: A143329 gray code primes sample values

[jsk]

G'day Seqfans,

Yes, I agree that A143329(39) = 1549 rather than 13.
A003188, and each of its subsequences, is monotone up to the floor of the base
2 logarithm.

I calculate using Magma that the first 55 terms (maximum 11 bits) are:
3, 2, 7, 11, 19, 61, 47, 109, 73, 223, 211, 251, 239, 167, 151, 157, 137, 439,
421, 419, 499, 463, 331, 787, 827, 971, 991, 1009, 947, 911, 641, 647, 659, 701,
757, 613, 569, 521, 1549, 1663, 1747, 1789, 1697, 1667, 1933, 1951, 1877, 1291,
1367, 1531, 1447, 1451, 1279, 1069, 1051

/JSK

On 19/04/2012, Kevin Ryde <user42 at zip.com.au> wrote:
> As another maybe-typo report, for A143329, gray code of primes where
> that gray code is also prime, the sample values from 13 onwards near the
> end look a bit doubtful
>
>     569, 521, 13, 59, 103, 109, 127, 193, 211, 233, 227
>               ^^...
>
> I make it value 1549 there, but maybe I misunderstand the definition.
>
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