# A173126 (b-file synthesized from sequence entry) 0 0 1 0 2 0 3 0 4 1 5 2 6 7 7 14 8 36 9 72 10 165 11 330 12 715 13 1430 14 3004 15 6008 16 12393 17 24786 18 50559 19 101118 20 204820 21 409640 22 826045 23 1652090 24 3321891 25 6643782 26 13333932 27 26667864 28 53457121 29 106914242 30 214146295 31 428292590 32 857417220 33 1714834440 34 3431847189