# A308446 (b-file synthesized from sequence entry) 0 1 1 1 2 4 3 12 4 39 5 118 6 371 7 1129 8 3468 9 10524 10 31910 11 96155 12 289016 13 865000 14 2581577 15 7679762 16 22784896 17 67418329 18 199004329 19 586052299 20 1722165404 21 5050349249 22 14781877481 23 43185726143 24 125949155473 25 366716549379 26 1066057177765 27 3094398005409 28 8969054893842