# A151439 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 7 4 22 5 74 6 269 7 1022 8 3987 9 15897 10 64787 11 268685 12 1130049 13 4810797 14 20700879 15 89918115 16 393811281 17 1737451533 18 7716025961 19 34470611627 20 154822298289 21 698772455153 22 3167909310263 23 14420624239207 24 65891331074973 25 302120467333277 26 1389723243292295 27 6411702376827157 28 29663748424179837