[1,1,2,6,19,68,236,863,3137,11636,43306,162728,614142,2330454,8875656,33924699,130038017,499753560,1924912505,7429159770,28723877046,111236422377,431403469046,1675316533812,6513837677642,25354842098354,98794053266471,385312558567775]