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This sequence needs a definition!
Table of n, a(n) for n=0..44.
J. Dobrzelewski and P. Petrov, Cellular Automata [broken link]
Index entries for sequences related to cellular automata
Sequence in context: A233968 A120453 A023995 * A239954 A167706 A072121
Adjacent sequences: A018186 A018187 A018188 * A018190 A018191 A018192
Joel Dobrzelewski (dobrzele(AT)cvm.msu.edu)