# A072338 (b-file synthesized from sequence entry) 0 1 1 2 2 7 3 18 4 48 5 114 6 273 7 614 8 1370 9 2952 10 6275 11 13034 12 26725 13 53854 14 107238 15 210670 16 409446 17 786936 18 1498147 19 2825084 20 5282409 21 9795620 22 18027645 23 32935112 24 59760481 25 107724038 26 192984835 27 343676216 28 608589028 29 1071869694 30 1878068324 31 3274291480 32 5681336242