# A026078 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 1 4 5 5 8 6 24 7 40 8 133 9 218 10 736 11 1203 12 4135 13 6743 14 23452 15 38194 16 134043 17 218115 18 770864 19 1253614 20 4455462 21 7242629 22 25859380 23 42022984 24 150615223 25 244700887 26 879876040 27 1429252775 28 5153445895 29 8369948745 30 30251941860 31 49127900370