# A153905 (b-file synthesized from sequence entry) 0 1 1 2 2 1 3 1 4 2 5 1 6 2 7 5 8 6 9 9 10 17 11 17 12 26 13 58 14 75 15 126 16 312 17 396 18 728 19 2092 20 2615 21 5251 22 16697 23 25367 24 59223 25 199945 26 337534 27 830329 28 2967422 29 5495637 30 14867026