A305705 Positive integers which are not the semiperimeter of any triangle with integer sides and area.
1, 2, 3, 4, 5, 7, 10, 11, 13, 14, 17, 19, 23, 26, 29, 31, 37, 41, 43, 46, 47, 51, 53, 58, 59, 61, 62, 67, 69, 71, 73, 74, 79, 83, 89, 92, 94, 97, 101, 103, 106, 107, 109, 113, 122, 123, 127, 131, 137, 139, 141, 142, 149, 151, 157, 158, 163, 167, 173, 179, 181
Offset: 1
Keywords
Links
- Peter Kagey, Table of n, a(n) for n = 1..1000
Formula
a(n) = A305703(n)/2.