Nicely done on mine, googon97. Bonanova, I've solved yours:
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x\y| 1 2 3 4 5 6 ---+--------------------- 0 | 4 10 28 82 244 730 1 | 1 7 25 79 241 727 2 | 7 13 31 85 247 733 3 | -5 1 19 73 235 721 4 | 19 25 43 97 259 745 5 |-29 -23 -5 49 211 697 6 | 67 73 91 145 307 793