A075122 a(n) = least positive integer > a(n-1) and not a(i)+2*a(j) for 1<=i<j<n.

1, 2, 3, 4, 6, 12, 17, 18, 19, 20, 21, 22, 23, 24, 29, 31, 32, 33, 34, 73, 94, 96, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137