# A148315 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 5 4 14 5 38 6 124 7 376 8 1294 9 4282 10 15297 11 53096 12 196380 13 703207 14 2666168 15 9803953 16 37810371 17 142047071 18 555546878 19 2121629955 20 8397566784 21 32502960555 22 129911998351 23 508624323397 24 2049487856803 25 8102493104535 26 32878695403814 27 131065339081490 28 535106099908126 29 2148557956847231