$m$ $\delta = 2$ $\delta = 3$ $\delta = 4$ $\delta = 5$ $\delta = 6$ $\delta = 7$ 20 33 0 0 0 0 0 21 0 0 0 0 0 0 22 1077 660 0 0 0 0 23 0 96 0 0 0 0 24 23586 51518 10571 0 0 0 25 144 13352 - - - - 26 396252 2524790 - - - - 27 9536 1029442 - - - - 28 5517688 98639769 - - - - 29 317160 57866788 - - - - 30 66938146 3364751402 - - - -