[seqfan] Re: Possible correction to title of A113152 "a(1) = 2; a(n) is the smallest prime > a(n-1) such that a(n) + a(n-1) is a square"

[Maximilian Hasler]

On Sat, Oct 2, 2010 at 3:14 PM, Jonathan Post <jvospost3 at gmail.com> wrote:
> A113152 a(1) = 2; a(n) is the smallest prime > a(n-1) such that a(n) + a(n-1)
> should perhaps be:
> a(1) = 2; a(n) is the smallest prime > a(n-1) such that a(n) + a(n-1)
> is a square

you certainly intended to write "...is a fourth power".
I agree on this correction.

PARI code:
print1(s=a=2); for(n=1,99,until(isprime(s++^4-a),);print1(", "a=s^4-a))

M.