A135209 - OEIS

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A135209

D'Agapeyeff cipher.

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