# A049178 (b-file synthesized from sequence entry) 1 1 2 1 3 1 4 1 5 3 6 15 7 59 8 185 9 513 10 1429 11 4429 12 15157 13 53063 14 181075 15 601335 16 1986857 17 6668441 18 22844345 19 79190777 20 274979521 21 952675283 22 3299619927 23 11466715411 24 40054475169 25 140536413497 26 494404614557 27 1741798930389 28 6144137237061