A169780 Total number of ON cells after n-th stage in one-sixth slice of hexagonal CA defined in A151723 (including both boundaries).

0, 1, 3, 5, 9, 11, 15, 21, 29, 31, 35, 41, 51, 61, 69, 83, 99, 101, 105, 111, 121, 131, 141, 159, 185, 203, 211, 225, 249, 277, 297, 329, 361, 363, 367, 373, 383, 393, 403, 421, 447, 465, 475, 493, 523, 561, 595, 637, 695, 729, 737, 751, 775, 803, 831, 875, 943, 1003, 1031

Offset: 0

Author

N. J. A. Sloane, May 11 2010

Keywords

• nonn

Comments

Partial sums of A170905.

Links

• N. J. A. Sloane, Table of n, a(n) for n = 0..1025
• N. J. A. Sloane, Catalog of Toothpick and Cellular Automata Sequences in the OEIS
• Index entries for sequences related to cellular automata

Crossrefs

Cf. A151723, A169779, A169781.

Formula

a(n) = n + (A151723(n) - 1)/6, n >= 1. - Omar E. Pol, Mar 06 2013