# A216586 (b-file synthesized from sequence entry) 0 1 1 1 2 5 3 28 4 202 5 1579 6 13375 7 118858 8 1098458 9 10453452 10 101872926 11 1012109860 12 10218226307 13 104570617520 14 1082633236498 15 11321654913838 16 119438468577559 17 1269787015989428 18 13592294300856138 19 146390465351654178 20 1585337895099162317 21 17253991887494062080