# A302093 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 4 4 10 5 25 6 70 7 199 8 588 9 1784 10 5544 11 17569 12 56628 13 185202 14 613470 15 2054998 16 6952660 17 23732911 18 81662152 19 283026021 20 987369656 21 3465222945 22 12228193432 23 43369190282 24 154532114800 25 552998717472 26 1986841476000 27 7164993393905 28 25928281261800 29 94132464529902