# A027838 (b-file synthesized from sequence entry) 1 1 2 7 3 22 4 111 5 486 6 3772 7 29142 8 275871 9 2830459 10 32028882 11 392744078 12 5201524044 13 73943424582 14 1123603726896 15 18176728661832 16 311951284854975 17 5661698774848910 18 108355867352001811 19 2181096921557783966 20 46066653293892718506 21 1018705098450761473704