A175387 a(n) = A004001(n)-floor(A004001(n)/2).

1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 4, 4, 4, 4, 4, 4, 5, 5, 6, 6, 6, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 10, 10, 11, 11, 11, 12, 12, 12, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 19, 20, 20, 21, 21, 21, 22, 22, 23, 23, 23, 24, 24, 24, 24, 24, 25, 25, 26, 26, 26, 27, 27, 27, 27, 27, 28, 28, 28, 29

Offset: 1

Author

Roger L. Bagula, Dec 03 2010

Keywords

• nonn

Crossrefs

Cf. A004001.

Programs

Mathematica

f[0] = 0; f[1] = 1; f[2] = 1;
f[n_] := f[n] = f[f[n - 1]] + f[n - f[n - 1]];
b = Table[f[n] - Floor[f[n]/2], {n, 0, 100}]