# A026667 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 5 4 14 5 21 6 55 7 98 8 255 9 421 10 1047 11 1939 12 4851 13 8393 14 20265 15 38423 16 93728 17 166999 18 395317 19 761724 20 1824934 21 3319575 22 7745123 23 15103234 24 35691596 25 65946113 26 152151529 27 299476048 28 700050056 29 1309537115 30 2994340063