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A135209 D'Agapeyeff cipher. 1
75628, 28591, 62916, 48164, 91748, 58464, 74748, 28483, 81638, 18174, 74826, 26475, 83828, 49175, 74658, 37575, 75936, 36565, 81638, 17585, 75756, 46282, 92857, 46382, 75748, 38165, 81848, 56485, 64858, 56382, 72628, 36281, 81728 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

The D'Agapeyeff cipher is an as-yet unbroken cipher that appears in the first edition of Codes and Ciphers, an elementary book on cryptography published by the Russian-born English cartographer Alexander D'Agapeyeff in 1939.

LINKS

Paolo P. Lava and Giorgio Balzarotti, Dec 05 2007, Table of n, a(n) for n = 0..78

American Cryptogram Association, Discussion of possible causes of failure to solve D'Agapeyeff cipher [Via Internet Archive Wayback Machine]

Robert Matthews, Notes on the D’Agapeyeff Cipher

Wikipedia, D'Agapeyeff cipher

CROSSREFS

Cf. A101110, A101111, A101112.

Sequence in context: A204865 A323025 A323804 * A243959 A236807 A251470

Adjacent sequences:  A135206 A135207 A135208 * A135210 A135211 A135212

KEYWORD

fini,full,nonn

AUTHOR

Paolo P. Lava and Giorgio Balzarotti, Dec 05 2007

STATUS

approved

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Last modified March 28 04:41 EDT 2020. Contains 333073 sequences. (Running on oeis4.)