# A134063 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 7 4 26 5 91 6 302 7 967 8 3026 9 9331 10 28502 11 86527 12 261626 13 788971 14 2375102 15 7141687 16 21457826 17 64439011 18 193448102 19 580606447 20 1742343626 21 5228079451 22 15686335502 23 47063200807 24 141197991026 25 423610750291 26 1270865805302 27 3812664524767 28 11438127792026