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A109527 Prague bus clock sequence. 1
0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 2, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 1, 2, 0, 0, 2, 0, 0, 0, 2, 1, 0, 0, 2, 2, 0, 0, 5, 0, 0, 0, 5, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 2, 0, 1, 1, 0, 0, 1, 1, 1, 0, 1, 1, 2, 0, 1, 2, 0, 0, 1, 2, 1, 0, 1, 2, 2, 0, 1, 5, 0, 0, 1, 5, 1, 0, 2, 0, 0, 0, 2, 0, 1, 0, 2, 0, 2, 0, 2, 1, 0, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,12

COMMENTS

See the sequence as a succession of quadruplets showing the time (in hours and minutes). The sequence starts at midnight (00:00) and ends at 22:51 showing all sound times seen in a lateral mirror (if the clock in the bus indicates 22:51 one will read 15:22 in a lateral window, which is a possible time of the day, thus the quadruplet 2251 belongs to the sequence; the quadruplet 0825 is not in the sequence as 08:25 produces 25:80 in the window). On such a digital clock the only digits which produce another "mirror" digit are 0 (->0), 1 (->1), 2 (->5), 5(->2) and 8(->8). "8" must be discarded in this sequence and "5" carefully used.

LINKS

Table of n, a(n) for n=0..104.

CROSSREFS

Cf. A028354, A109571.

Sequence in context: A284574 A206499 A277885 * A186715 A219485 A057918

Adjacent sequences:  A109524 A109525 A109526 * A109528 A109529 A109530

KEYWORD

base,easy,fini,nonn

AUTHOR

Eric Angelini and others, Aug 29 2005

STATUS

approved

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Last modified February 23 02:29 EST 2019. Contains 320411 sequences. (Running on oeis4.)