A151929 First differences of A070952.

1, 2, 0, 3, -2, 5, -4, 7, -5, 5, -1, 3, -2, 7, -6, 9, -7, 4, 1, 4, -3, 2, 0, 5, -2, 1, -1, 7, -3, 4, -3, 8, -13, 13, -10, 17, -14, 12, -6, 7, 2, -6, 4, 4, -11, 17, -13, 9, -7, 9, -10, 16, -7, 8, -11, 16, -8, 3, -4, 13, -8, 9, -11, 19, -14, -8, 9, 4, 0, -2, 10, 1, -5, -5, 15, -5, 0, 9, -7, 6, 2, -9, 2, 13, -13, 20, -23, 10, 3, -5, 0, 27, -34, 22

Offset: 0

Author

N. J. A. Sloane, Aug 10 2009

Keywords

• sign

Comments

Net increase in number of ON cells at generation n of 1-D CA using Rule 30.

Links

• N. J. A. Sloane, Table of n, a(n) for n = 0..10000 (Added Aug 15 2009)
• Index entries for sequences related to cellular automata

Programs

Mathematica

steps = 100; Join[{1}, Total /@ CellularAutomaton[30, {{1}, 0}, steps] // Differences] (* Jean-François Alcover, Oct 07 2013 *)