# A037732 (b-file synthesized from sequence entry) 1 2 2 13 3 78 4 471 5 2828 6 16969 7 101814 8 610887 9 3665324 10 21991945 11 131951670 12 791710023 13 4750260140 14 28501560841 15 171009365046 16 1026056190279 17 6156337141676 18 36938022850057 19 221628137100342 20 1329768822602055