# A221365 (b-file synthesized from sequence entry) 0 1 1 3 2 1 3 21 4 1 5 108 6 1 7 525 8 1 9 2523 10 1 11 12096 12 1 13 57963 14 1 15 277725 16 1 17 1330668 18 1 19 6375621 20 1 21 30547443 22 1 23 146361600 24 1 25 701260563 26 1 27 3359941221 28 1 29 16098445548 30 1 31 77132286525 32 1 33 369562987083 34 1 35 1770682648896 36 1