# A148869 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 8 4 29 5 93 6 358 7 1331 8 5232 9 20772 10 84819 11 348269 12 1459026 13 6155455 14 26254063 15 112869377 16 488935002 17 2130797874 18 9344281029 19 41178638659 20 182340725116 21 810836851530 22 3619595549928 23 16214896709620 24 72876670584921 25 328508026895054 26 1484923372550990 27 6729257976836687 28 30567187200593085