Open Cases for Cyclic Difference Sets with k <= 300

vklambdanStatusComment
419 133 42 91OPEN
465 145 45 100OPEN
1123 154 21 133OPEN
645 161 40 121OPEN
1093 169 26 143OPEN
945 177 33 144OPEN gcd(v,n) = 9
1111 186 31 155OPEN
1380 197 28 169OPEN
5859 203 7 196OPEN gcd(v,n) = 7
469 208 92 116OPEN
1785 224 28 196OPEN gcd(v,n) = 7
1801 225 28 197OPEN
2291 230 23 207OPEN
639 232 84 148OPEN
2869 240 20 220OPEN
2574 249 24 225OPEN gcd(v,n) = 9
2160 255 30 225OPEN gcd(v,n) = 45
1925 260 35 225OPEN gcd(v,n) = 25
1381 276 55 221OPEN
817 289 102 187OPEN
781 300 115 185OPEN
3439 1719 859 860OPENcyclic Hadamard difference set
4355 2177 1088 1089OPENcyclic Hadamard difference set
8591 4295 2147 2148OPENcyclic Hadamard difference set
8835 4417 2208 2209OPENcyclic Hadamard difference set
9135 4567 2283 2284OPENcyclic Hadamard difference set
9215 4607 2303 2304OPENcyclic Hadamard difference set
9423 4711 2355 2356OPENcyclic Hadamard difference set