# A149208 (b-file synthesized from sequence entry) 0 1 1 1 2 4 3 10 4 40 5 131 6 543 7 1995 8 8492 9 33265 10 144245 11 588503 12 2586676 13 10852579 14 48195518 15 206354186 16 923882538 17 4016849256 18 18102778754 19 79653690932 20 360933654486 21 1603372701367 22 7298673862103 23 32676073002920 24 149326831866216 25 672858765696468 26 3085329699710324 27 13977902597587443