# A148043 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 3 4 8 5 19 6 59 7 160 8 540 9 1623 10 5782 11 18621 12 69373 13 235874 14 905452 15 3204843 16 12614718 17 46142381 18 185206756 19 695627226 20 2838006420 21 10897855854 22 45068748877 23 176317050793 24 737653565662 25 2932209752379 26 12390079057651 27 49934682230051 28 212833823146874 29 868150513527291 30 3728495506882947