# A052819 (b-file synthesized from sequence entry) 0 0 1 1 2 2 3 15 4 188 5 3300 6 74484 7 2054864 8 66998448 9 2520581400 10 107472778320 11 5121576763512 12 269759385873504 13 15561785854196400 14 975788232119245440 15 66080957140527828480 16 4806533577745476290304 17 373724762062131412853760