# A324372 (b-file synthesized from sequence entry) 0 1 1 0 2 0 3 0 4 1 5 2 6 9 7 28 8 144 9 640 10 2348 11 6740 12 37161 13 208186 14 1410137 15 8322892 16 47973920 17 231922220 18 1747678465 19 11712495736 20 101585559496 21 776251710048 22 6154289307912 23 41248110305520 24 397850617247393