[seqfan] Re: A140870 & A050216
franktaw at netscape.net
franktaw at netscape.net
Fri Nov 13 04:15:00 CET 2009
Arguably, A140870 is the more correct version; it includes the two
primes before p(1)^2. Thus A000879 is the cumulative sums of A140870,
and not of A050216.
I would be inclined to add the initial 2 to A050216, change the offset
to 0, and add a comment explaining what a(0) means. Then A140870 can
be removed. The crossref in A000879 can be changed to: cumulative sums
of A050216.
Franklin T. Adams-Watters
-----Original Message-----
From: zak seidov <zakseidov at yahoo.com>
Isn't A140870
a wrong version (extra initial 2)
of A050216?
Zak
A140870 Number of primes in intervals p(n)^2, where p(n)=n-th prime.
2, 2, 5, 6, 15, 9, 22, 11, 27, 47, 16, 57, 44, 20, 74, 52, 78, 32, 90,
66, 30
A050216 Number of primes between (prime(n))^2 and (prime(n+1))^2.
2, 5, 6, 15, 9, 22, 11, 27, 47, 16, 57, 44, 20, 46, 80, 78, 32, 90, 66,
30
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