# A210448 (b-file synthesized from sequence entry) 0 0 1 3 2 15 3 57 4 195 5 633 6 1995 7 6177 8 18915 9 57513 10 174075 11 525297 12 1582035 13 4758393 14 14299755 15 42948417 16 128943555 17 387027273 18 1161475035 19 3485211537 20 10457207475 21 31374768153 22 94130595915 23 282404370657 24 847238277795 25 2541765165033 26 7625396158395 27 22876389801777 28 68629572058515