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A305705
Positive integers which are not the semiperimeter of any triangle with integer sides and area.
1
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
1,2
FORMULA
a(n) = A305703(n)/2.
CROSSREFS
Complement of A305704.
Sequence in context: A285276 A002504 A133431 * A123091 A191918 A191925
KEYWORD
nonn
AUTHOR
Peter Kagey, Jun 08 2018
STATUS
approved