# A116428 (b-file synthesized from sequence entry) 0 1 1 4 2 22 3 125 4 669 5 3410 6 16677 7 78369 8 359110 9 1612613 10 7133274 11 31185350 12 135062165 13 580556958 14 2480278767 15 10542976739 16 44626102826 17 188215850830 18 791374442571 19 3318478309647 20 13882441625034 21 57952990683107