[1,2,4,12,36,132,456,1752,6340,24660,91224,356776,
1337896,5250728,19877904,78209712,298176516,
1175437428,4505865144,17789574792,68490100536,
270739425528,1046041377264,4139198745552,
16039426479336,63522770785032,246761907761776,
977995685565072,3807202080396240,
15098691607042000,58884954519908896]
|