[seqfan] Re: Help me understand these sequences
Hans Havermann
pxp at rogers.com
Mon Mar 29 19:38:20 CEST 2010
Charles:
> A144565 ("a(n)=p-th digit of 2^(1/2) where p = n-th prime."):
> By the description, this is a duplicate of A090204. But the values
> don't match at all. What is this?
Ray:
> Typical of the quality of submissions from this author.
Submitted on the same day as A144565 and by the same author are
A144566 to A144569.
A144566
Numbers with more prime factors (multiples counted) than the values of
their largest prime factor. 72 and 81 are missing.
A144567
These are, in order and excluding the first term, the primes in
A074320. However, a 5 is missing after the second 19.
A144568
48, 63, 99 are missing. 158, 189 shouldn't be there.
A144569
The second 56 should be 58. 72 shouldn't be there.
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