# A177379 (b-file synthesized from sequence entry) 0 1 1 1 2 4 3 27 4 260 5 3270 6 50904 7 946134 8 20462896 9 505137312 10 14020517520 11 432340670520 12 14667108820704 13 542979374426736 14 21784934875431168 15 941691211940974320 16 43634507604383543040 17 2157698329617806488320