A172100 Diagonal of the 26 X 26 Caesar Shift table.

3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 1

Offset

1,1

Links

Table of n, a(n) for n=1..26.

Wikipedia, Caesar cipher

Formula

a(n) = 1 + (2*n mod 26).

Mathematica

Clear[a, n, m];
a = Table[1 + Mod[n + m, 26], {m, 1, 26}, {n, 1, 26}];
Table[a[[n, n]], {n, 1, Length[a]}]

Crossrefs

Sequence in context: A137803 A059533 A189397 * A064679 A081874 A165747

Adjacent sequences: A172097 A172098 A172099 * A172101 A172102 A172103

Keyword

nonn,less,fini,full

Author

Roger L. Bagula, Jan 25 2010

Extensions

Keywords added, spelling corrected by the Assoc. Editors of the OEIS, Feb 02 2010

Status

approved