# A150227 (b-file synthesized from sequence entry) 0 1 1 2 2 6 3 21 4 87 5 320 6 1378 7 5734 8 24390 9 104847 10 468509 11 2014677 12 9086639 13 40512331 14 181514161 15 817438205 16 3739814457 17 16804267343 18 77203662737 19 352969349528 20 1615132230644 21 7418825839826 22 34348050827280 23 157446234193077 24 730722286101755 25 3383822047970392 26 15662986091827772 27 72724675112435270