# A148286 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 5 4 12 5 35 6 101 7 305 8 998 9 3192 10 10721 11 37044 12 126994 13 452386 14 1619673 15 5826276 16 21492264 17 79114692 18 294519731 19 1111169430 20 4186163252 21 15968539928 22 61242924850 23 235275484768 24 913138496950 25 3549546890306 26 13857948020131 27 54467713887561 28 214249217663498 29 847320663811610 30 3363260752897618