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EXAMPLE
| This sequence equals the central terms of the triangle formed from the semi-Fibonacci numbers (A030067) with 2^n terms in row n for n>=1:
n=0: 1;
n=1: (1), 2;
n=2: 1, (3), 2, 5;
n=3: 1, 6, 3, (9), 2, 11, 5, 16;
n=4: 1, 17, 6, 23, 3, 26, 9, (35), 2, 37, 11, 48, 5, 53, 16, 69; ...
The semi-Fibonacci numbers (A030067) start:
[1, (1), 2, 1, (3), 2, 5, 1, 6, 3, (9), 2, 11, 5, 16, 1, ...],
and obey the recurrence:
A030067(n) = A030067(n/2) when n is even; and
A030067(n) = A030067(n-1) + A030067(n-2) when n is odd.
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