# A109786 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 1 4 1 5 5 6 13 7 33 8 85 9 225 10 589 11 1541 12 4033 13 10561 14 27649 15 72385 16 189505 17 496133 18 1298893 19 3400545 20 8902741 21 23307681 22 61020301 23 159753221 24 418239361 25 1094964865 26 2866655233 27 7505000833 28 19648347265 29 51440040965 30 134671775629