# A183123 (b-file synthesized from sequence entry) 0 0 1 1 2 4 3 11 4 30 5 83 6 236 7 691 8 2050 9 6123 10 18336 11 54971 12 164870 13 494563 14 1483636 15 4450851 16 13352490 17 40057403 18 120172136 19 360516331 20 1081548910 21 3244646643 22 9733939836 23 29201819411 24 87605458130 25 262816374283 26 788449122736 27 2365347368091 28 7096042104150