# A309226 (b-file synthesized from sequence entry) 0 0 1 3 2 8 3 21 4 56 5 145 6 366 7 945 8 2506 9 6633 10 17776 11 48521 12 133106 13 369019 14 1028404 15 2880287 16 8100948 17 22877145 18 64823568 19 184274931 20 525282740 21 1501215193 22 4299836186 23 12340952049 24 35486796312 25 102220582465 26 294917666854 27 852123981581 28 2465458792768