# A148411 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 5 4 17 5 57 6 194 7 692 8 2597 9 9965 10 38887 11 153446 12 616302 13 2509496 14 10324475 15 42790492 16 178745272 17 752653009 18 3190734528 19 13601112147 20 58251672134 21 250707438567 22 1084012398201 23 4705965772551 24 20500963892647 25 89603695244305 26 392909790645597 27 1728094585729224 28 7621009692355807