A253908 Partial sums of A072272.

1, 6, 11, 28, 33, 58, 75, 136, 141, 166, 191, 276, 293, 378, 439, 656, 661, 686, 711, 796, 821, 946, 1031, 1336, 1353, 1438, 1523, 1812, 1873, 2178, 2395, 3168, 3173, 3198, 3223, 3308, 3333, 3458, 3543, 3848, 3873, 3998, 4123, 4548, 4633, 5058, 5363, 6448, 6465, 6550, 6635, 6924, 7009, 7434, 7723, 8760, 8821, 9126, 9431, 10468

Offset: 0

Author

Omar E. Pol, Jan 27 2015

Keywords

• nonn

Comments

Also, total number of cubic ON cells after n generations in a three-dimensional cellular automaton where A072272(n) gives the number of cubic ON cells in the n-th level of the structure starting from the top. An ON cell remains ON forever. The structure looks like an irregular stepped pyramid.

Links

• N. J. A. Sloane, Table of n, a(n) for n = 0..8192
• N. J. A. Sloane, On the Number of ON Cells in Cellular Automata, arXiv:1503.01168, 2015
• N. J. A. Sloane, Catalog of Toothpick and Cellular Automata Sequences in the OEIS
• Index entries for sequences related to cellular automata

Crossrefs

Cf. A072272, A116520, A245542, A253767.

Extensions

Offset changed to 0 by N. J. A. Sloane, Feb 06 2015