A328090 If n even then round(n^2/48), otherwise round(n^2/49).

0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 7, 7, 8, 8, 10, 10, 12, 12, 14, 14, 16, 16, 18, 19, 21, 21, 24, 24, 26, 27, 29, 30, 33, 33, 36, 37, 40, 40, 43, 44, 47, 48, 51, 52, 55, 56, 60, 61, 64, 65, 69, 70, 73, 75, 78, 80, 84, 85, 89, 91, 94, 96, 100, 102, 106, 108, 112, 114, 118, 120, 124, 127, 131, 133, 137

Offset

0,10

References

East, James, and Ron Niles. "Integer Triangles of Given Perimeter: A New Approach via Group Theory." The American Mathematical Monthly 126.8 (2019): 735-739.

Links

Table of n, a(n) for n=0..81.

Crossrefs

Sequence in context: A185329 A029031 A188666 * A029156 A241826 A237979

Adjacent sequences: A328087 A328088 A328089 * A328091 A328092 A328093

Keyword

nonn

Author

N. J. A. Sloane, Oct 17 2019

Status

approved