# A073517 (b-file synthesized from sequence entry) 0 0 1 4 2 25 3 160 4 1193 5 9585 6 80020 7 686048 8 6003530 9 53378283 10 480532488 11 4369582734 12 40063566855 13 369893939287 14 3435376839800 15 32069022099022 16 300694113015105 17 2830466318006780 18 26735673312004455 19 253315661161665338 20 2406763761677705769 21 22923886160712831134 22 218839439542390117580