$m$ $\delta = 2$ $\delta = 3$ $\delta = 4$ $\delta = 5$ $\delta = 6$ $\delta = 7$ 21 35 0 0 0 0 0 22 0 0 0 0 0 0 23 1356 807 0 0 0 0 24 0 204 0 0 0 0 25 36056 74763 - - - - 26 440 32812 - - - - 27 726459 4301307 - - - - 28 33292 2903338 - - - - 29 11869703 193766492 - - - - 30 1255728 184829436 - - - -