A093820 a(n) = Sum(GCD(n,a(k)): 1<=k<n) for n>1; a(1) = 1.

1, 1, 2, 4, 4, 8, 6, 22, 10, 24, 20, 42, 12, 36, 32, 64, 16, 64, 18, 82, 50, 60, 22, 144, 60, 48, 64, 96, 28, 172, 30, 282, 78, 64, 70, 256, 36, 72, 106, 254, 80, 204, 84, 176, 166, 88, 92, 518, 78, 200, 136, 210, 104, 244, 134, 346, 96, 112, 58, 538, 120, 120, 216