[1,1,4,21,124,786,5228,36005,254568,1837214,
13479308,100239418,753880440,5724153044,
43820345784,337850230061,2621033435856,
20445810352950,160271222750348,1261838520251886,
9973780991950168,79115475268744044,
629605388017281768,5025263773704414050]
|