A246597 A070952(2^n-1).

1, 3, 6, 12, 22, 39, 78, 132, 269, 526, 1036, 2067, 4162, 8252, 16387, 32662, 65372, 130953, 262212, 524550, 1047850, 2097353, 4192505, 8384471

Offset: 0

Author

N. J. A. Sloane, Sep 06 2014

Keywords

• nonn
• more

Comments

Arises from studying behavior of 1-D CA defined by Rule 30 when started with a single ON cell.

I would very much like to see a recurrence or formula.

Subtracting 2^n gives 0, 1, 2, 4, 6, 7, 14, 4, 13, 14, 12, 19, 66, 60, ...

Crossrefs

Cf. A070952, A246024, A246023.

Extensions

a(14)-a(23) from Hiroaki Yamanouchi, Sep 12 2014