[seqfan] Re: A016037 alphabetical length steps samples
rayjchandler at sbcglobal.net
Thu May 31 23:37:30 CEST 2012
The following terms (all 10-digit examples) have published values of 3 but
should be 4 (as I understand the sequence):
43, 47, 48, 53, 57, 58, 63, 67, 68, 76
> A016037 was submitted by Bob Wilson, rgwv at rgwv.com, who used to be a
> member of this list. Perhaps you should ask him directly? In fact I will
> this to him.
> Bob, can you answer Kevin's questions?
> On Wed, May 30, 2012 at 6:54 PM, Kevin Ryde <user42 at zip.com.au> wrote:
> > In A016037 iterations of taking the length of a number in letters, the
> > samples show a(72)=4 and a(76)=3, if I count along correctly.
> > Is that right? I thought since "seventy two" and "seventy six" have
> > the same number of starting letters they would both be 4 iterations
> > 72 -> 10 -> 3 -> 5 -> 4
> > Some other length=10 samples are 3 too, such as "forty three" a(43)=3.
> > Is there something subtle I'm missing? I take it A005589 is the map
> > iterated, as it refers to A016037 (though there's no reference back).
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