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 A089235 4-symbol sequence with period 96. 0
 0, 1, 2, 3, 0, 3, 1, 0, 2, 3, 2, 1, 0, 3, 1, 3, 2, 1, 2, 0, 1, 3, 1, 2, 0, 2, 3, 0, 1, 0, 2, 0, 3, 1, 2, 3, 2, 0, 1, 0, 3, 2, 1, 3, 1, 0, 3, 0, 2, 3, 1, 3, 0, 1, 2, 1, 3, 2, 0, 3, 0, 1, 3, 2, 3, 0, 2, 1, 2, 3, 1, 0, 1, 2, 0, 3, 2, 3, 1, 2, 1, 0, 2, 1, 3, 0, 3, 2, 0, 2, 1, 0, 1, 3, 0, 2, 0, 1, 2 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS In each period there are 24 of each of the 4 digits. Properties: 1) No digit is repeated in the sequence. No group of digits is repeated in the sequence. 2) All possible four-digit combinations (taking rule #1 in account) are represented in the forward reading of the sequence. 3) All possible four-digit combinations (taking rule #1 in account) are represented in the backward reading of the sequence. REFERENCES Erik Evenson, posting to sci.math, Jan 09, 2004 LINKS CROSSREFS Sequence in context: A128621 A132385 A191716 * A051910 A137998 A080593 Adjacent sequences:  A089232 A089233 A089234 * A089236 A089237 A089238 KEYWORD nonn AUTHOR N. J. A. Sloane, Jan 15 2004 STATUS approved

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