# A331729 (b-file synthesized from sequence entry) 0 1 1 2 2 2 3 3 4 3 5 7 6 11 7 20 8 31 9 47 10 92 11 162 12 312 13 632 14 1235 15 2460 16 4844 17 9665 18 19335 19 38727 20 77569 21 155729 22 310405 23 620596 24 1240580 25 2481645 26 4966229 27 9926596 28 19855760 29 39717367 30 79428417