1,2

R. G. Schrandt and S. M. Ulam, ``On recursively defined geometric objects and patterns of growth,'' in A. W. Burks, editor, Essays on Cellular Automata. Univ. Ill. Press, 1970, p. 238.

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

Index entries for sequences related to cellular automata

Sequence in context: A123339 A152771 A135635 this_sequence A014237 A033885 A053079

Adjacent sequences: A006444 A006445 A006446 this_sequence A006448 A006449 A006450

nonn

N. J. A. Sloane (njas(AT)research.att.com).