# A246597 (b-file synthesized from sequence entry) 0 1 1 3 2 6 3 12 4 22 5 39 6 78 7 132 8 269 9 526 10 1036 11 2067 12 4162 13 8252 14 16387 15 32662 16 65372 17 130953 18 262212 19 524550 20 1047850 21 2097353 22 4192505 23 8384471