# A121483 (b-file synthesized from sequence entry) 1 1 2 2 3 6 4 19 5 56 6 167 7 487 8 1411 9 4047 10 11527 11 32617 12 91790 13 257065 14 716896 15 1991792 16 5515535 17 15227846 18 41930133 19 115176023 20 315676425 21 863475561 22 2357539227 23 6425887551 24 17487572124 25 47522431681 26 128969086382 27 349567320762