# A367851 (b-file synthesized from sequence entry) 0 1 1 2 2 10 3 80 4 872 5 11984 6 198416 7 3840192 8 85031040 9 2119385856 10 58714881792 11 1789646610432 12 59515302478848 13 2144299161348096 14 83204666280609792 15 3459286210445942784 16 153413140701637804032 17 7228914528043587796992 18 360670654712328998289408