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A252994
Multiples of 26.
2
0, 26, 52, 78, 104, 130, 156, 182, 208, 234, 260, 286, 312, 338, 364, 390, 416, 442, 468, 494, 520, 546, 572, 598, 624, 650, 676, 702, 728, 754, 780, 806, 832, 858, 884, 910, 936, 962, 988, 1014, 1040, 1066, 1092, 1118, 1144, 1170, 1196, 1222, 1248, 1274, 1300, 1326, 1352, 1378
OFFSET
0,2
REFERENCES
Richard A. Mollin, Codes: The Guide to Secrecy From Ancient to Modern Times. Chapman and Hall/CRC (2005): 12.
Anne L. Young, Mathematical Ciphers: From Caesar to RSA. American Mathematical Society (2006): 23.
FORMULA
a(n) = 26*n = 2*a(n-1) - a(n-2).
G.f.: 26*x/(1-x)^2. - Georg Fischer, Feb 25 2019
MATHEMATICA
26 Range[0, 51]
PROG
(PARI) a(n)=26*n \\ Georg Fischer, Feb 25 2019
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Alonso del Arte, Dec 25 2014
STATUS
approved