login
A132981
Equal sides of isosceles Heronian triangles, ordered.
0
5, 5, 13, 13, 17, 17, 25, 25, 29, 29, 37, 37, 41, 41, 53, 53, 61, 61, 65, 65, 65, 65, 73, 73, 85, 85, 85, 85, 89, 89, 97, 97, 101, 101, 109, 109, 113, 113, 125, 125, 137, 137, 145, 145, 145, 145, 149, 149, 157, 157, 169, 169, 173, 173, 181, 181, 185, 185, 185, 185
OFFSET
1,1
FORMULA
Entries of A020882 doubled.
EXAMPLE
Entries 65,65,65,65, refer to the isosceles Heronian triangles (65,65,66),(66,65,112),(65,65,32),(65,65,126) the first two with common area 1848 and the last two with common area 1008.
CROSSREFS
Cf. A120644.
Sequence in context: A055526 A146984 A055524 * A168392 A147280 A147494
KEYWORD
nonn
AUTHOR
Lekraj Beedassy, Nov 19 2007
STATUS
approved