17 Aug
2005
17 Aug
'05
6:32 a.m.
----- Original Message ----- From: "Richard Guy" <rkg@cpsc.ucalgary.ca> To: "math-fun" <math-fun@mailman.xmission.com> Cc: "Alex Fink" <finka@math.ucalgary.ca>; <seqfan@ext.jussieu.fr> Sent: Monday, August 15, 2005 2:51 PM Subject: Re: [math-fun] Re: A016142
Alex Fink & I are now able to give the right answers. The number of incongruent integer-edged Heron triangles whose circumdiameter is the product of n distinct primes each of shape 4k + 1 is (2*7^n - 3*3^n + 1)/6
This is A016161 in OEIS.
Not true. Compute the sequence.