OFFSET
1,1
COMMENTS
k^2 is always the sum of k^2 and 0^2, but no real triangle can have a zero-length side. Thus, the Mathematica program below searches for length 41 and implicitly drops the zero-squared-plus-n-squared solution. - Harvey P. Dale, Dec 09 2010
If m is a term, then 2*m and p*m are terms where p is any prime of the form 4j+3. - Ray Chandler, Dec 30 2019
LINKS
Ray Chandler, Table of n, a(n) for n = 1..10000
MATHEMATICA
Select[Range[150000], Length[PowersRepresentations[#^2, 2, 2]]==41&] (* Harvey P. Dale, Dec 09 2010 *)
CROSSREFS
Cf. A004144 (0), A084645 (1), A084646 (2), A084647 (3), A084648 (4), A084649 (5), A097219 (6), A097101 (7), A290499 (8), A290500 (9), A097225 (10), A290501 (11), A097226 (12), A097102 (13), A290502 (14), A290503 (15), A097238 (16), A097239 (17), A290504 (18), A290505 (19), A097103 (22), A097244 (31), A097245 (37), A097626 (67).
KEYWORD
nonn
AUTHOR
James R. Buddenhagen, Sep 17 2004
STATUS
approved