# A320025 (b-file synthesized from sequence entry) 0 1 1 2 2 4 3 8 4 36 5 192 6 904 7 3712 8 14032 9 51722 10 194536 11 760168 12 3057432 13 12419136 14 50280624 15 202174720 16 809484496 17 3241156320 18 13015284868 19 52449925944 20 211924584048 21 857458176592 22 3471152601384 23 14055938213248 24 56942486482416 25 230837469092362 26 936540163215304