# A287498 (b-file synthesized from sequence entry) 1 0 2 4 3 9 4 12 5 30 6 55 7 105 8 212 9 405 10 794 11 1551 12 3015 13 5889 14 11477 15 22374 16 43636 17 85068 18 165871 19 323418 20 630582 21 1229517 22 2397289 23 4674198 24 9113711 25 17769780 26 34647305 27 67554891 28 131717661 29 256821477 30 500747300