# A150420 (b-file synthesized from sequence entry) 0 1 1 2 2 7 3 24 4 95 5 381 6 1618 7 6947 8 30662 9 136573 10 618099 11 2818128 12 12981409 13 60152326 14 280713698 15 1316221777 16 6203507127 17 29349414927 18 139399848256 19 664156567450 20 3174024450836 21 15207455409058 22 73041930090888 23 351566863640124 24 1695586707912644 25 8192282542679420 26 39647874861987388 27 192172115316412119