# A079223 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 5 4 11 5 26 6 66 7 161 8 420 9 1093 10 2916 11 7819 12 21304 13 58321 14 161233 15 448090 16 1253252 17 3521389 18 9941693 19 28175716 20 80152141 21 228747967 22 654817275 23 1879602446 24 5408974390 25 15601662378 26 45098766532 27 130624550412