a(n) is the number of triangles (up to congruence) with integer coordinates that have perimeter strictly less than n.
A298121
a(n) is the number of triangles (up to congruence) with integer coordinates that have perimeter strictly less than n.
Terms
- a(0) =1a(1) =3a(2) =5a(3) =11a(4) =18a(5) =29a(6) =44a(7) =70a(8) =94a(9) =136a(10) =177a(11) =243a(12) =303a(13) =386a(14) =485a(15) =611a(16) =738a(17) =914a(18) =1093a(19) =1312a(20) =1529a(21) =1831a(22) =2114a(23) =2488a(24) =2854a(25) =3310a(26) =3756a(27) =4307a(28) =4880a(29) =5520
External references
- oeis: A298121