# A172982 (b-file synthesized from sequence entry) 1 2 2 5 3 10 4 17 5 28 6 47 7 88 8 149 9 238 10 647 11 1096 12 1595 13 2476 14 3467 15 9936 16 16885 17 25886 18 34935 19 44584 20 54533 21 115182 22 781831 23 1728500 24 61728549 25 127728598 26 194328647