# A148544 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 5 4 19 5 45 6 173 7 469 8 1895 9 5639 10 22987 11 72543 12 303393 13 997591 14 4202367 15 14311543 16 61189337 17 213097925 18 917264035 19 3269434741 20 14199987201 21 51345567007 22 224376013183 23 824557694411 24 3623559192769 25 13456700819921 26 59452316544329 27 223377434078431 28 990584974423035 29 3753151591363015