A156562 a(n)=(-1)^n*sum(k=1,n,(-1)^k*A054353(k))

1, 2, 3, 3, 4, 5, 5, 7, 7, 8, 9, 10, 10, 11, 12, 12, 13, 14, 15, 15, 17, 16, 18, 18, 19, 20, 21, 21, 22, 23, 23, 24, 25, 25, 27, 27, 28, 29, 30, 30, 31, 32, 32, 34, 34, 35, 36, 36, 37, 38, 38, 39, 40, 41, 41, 43, 43, 44, 44, 46, 45, 48, 47, 49, 49, 51, 50, 52, 52, 53, 53, 55, 54