# A016795 (b-file synthesized from sequence entry) 0 128 1 78125 2 2097152 3 19487171 4 105413504 5 410338673 6 1280000000 7 3404825447 8 8031810176 9 17249876309 10 34359738368 11 64339296875 12 114415582592 13 194754273881 14 319277809664 15 506623120463 16 781250000000