I've been reading Godel, Escher and Bach. In Chapter III - Figure and Ground, there is this number sequence:(adsbygoogle = window.adsbygoogle || []).push({});

1 3 7 12 18 26 35 45 56 69 ...

I understand that every number is expressed once, covert or overt, in the sequence above.

For example you can 'find' 2 in the gap between 1 and 3. You can 'find' 4 in the gap between 3 and 7, 5 in the gap between 7 and 12, etc.

Can someone please show me an algorithm that I can use for generating the nth number in this sequence?

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# Number sequence from GEB

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