# A148058 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 3 4 10 5 22 6 67 7 154 8 568 9 1550 10 5395 11 14789 12 57575 13 175048 14 652147 15 1970803 16 7935097 17 25771324 18 100086938 19 321963277 20 1326586894 21 4506499578 22 18002375075 23 60497955037 24 253509127261 25 889894534837 26 3628463886414 27 12595624469633 28 53465517732990 29 192448886725638 30 797022172851503 31 2837071346803048