$m$ $\delta = 2$ $\delta = 3$ $\delta = 4$ $\delta = 5$ $\delta = 6$ $\delta = 7$ 17 27 0 0 0 0 0 18 0 0 0 0 0 0 19 720 459 0 0 0 0 20 0 78 0 0 0 0 21 12976 30251 6462 0 0 0 22 117 8981 3042 0 0 0 23 181863 1271393 781557 83916 0 0 24 6350 586141 541525 72046 0 0 25 2148091 43300734 - - - - 26 174129 28370008 - - - - 27 22484007 1307398301 - - - - 28 3286393 1134897871 - - - - 29 215579698 36553318000 - - - - 30 48795643 39803399843 - - - -