# A287827 (b-file synthesized from sequence entry) 0 1 1 10 2 86 3 742 4 6404 5 55274 6 477082 7 4117804 8 35541714 9 306768722 10 2647791524 11 22853698754 12 197255539962 13 1702558017644 14 14695170558994 15 126837403201602 16 1094762853302164 17 9449150445514434 18 81557794797885642 19 703944119701429084 20 6075903902137709074