# A335806 (b-file synthesized from sequence entry) 0 1 1 4 2 12 3 40 4 118 5 358 6 936 7 2600 8 6212 9 16068 10 34936 11 83708 12 163452 13 357056 14 613592 15 1205716 16 1770616 17 3073480 18 3715920 19 5573480 20 5255048 21 6591160 22 4353912 23 4330096 24 1513712 25 1061392 26 0