|
|
0, 2, 6, 20, 68, 228, 754, 2456, 7884, 24982, 78282, 242998, 748364, 2289584, 6966346, 21098366, 63651808, 191406976, 573998990, 1717334182, 5127933348, 15286303526, 45503354154, 135287179508, 401809091392, 1192336418386
(list; graph; refs; listen; history; internal format)
|
|
