# A027600 (b-file synthesized from sequence entry) 1 3 2 6 3 15 4 34 5 86 6 216 7 548 8 1411 9 3677 10 9620 11 25295 12 66735 13 176535 14 467996 15 1242482 16 3302288 17 8784052 18 23380492 19 62260290 20 165852146 21 441922281 22 1177759338 23 3139292092 24 8368647137 25 22310795823 26 59484268376