c \  a	1	2	3	4	5	6
0	1	1	1	1	1	1
1	3	4	9	24	70	216
2	5	9	42	224	1578	12,177
3	7	16	138	1280	19,157	314,624
4	9	25	363	5361	155,270	4,860,048
5	11	36	819	18,088	943,008	51,955,744
6	13	49	1652	52,032	4,606,320	420,545,536
7	15	64	3060	132,408	18,969,942	2,735,918,368
8	17	81	5301	305,745	68,084,583	14,918,043,569
9	19	100	8701	652,432	218,198,470	70,303,307,672
10	21	121	13,662	1,304,160	635,987,530	293,079,258,017