2n=8的四种安排是:
{1,3,6,8,7,2,4,5},
{1,3,7,2,8,6,4,5},
{1,5,4,2,7,3,6,8},
{1,5,4,6,3,7,2,8},因此a(4)=4;
2n=10的七种安排是:
{1,3,6,8,7,2,4,10,5,9},
{1,3,6,9,5,10,4,2,7,8},
{1,3,7,2,4,10,5,9,6,8},
{1,3,7,2,8,6,4,10,5,9},
{1,5,10,4,2,8,7,3,6,9},
{1,8,2,7,3,6,4,10,5,9},
{1,8,6,3,7,2,4,10,5,9},则a(5)=7;