login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A070448 a(n) = n^2 mod 26. 2
0, 1, 4, 9, 16, 25, 10, 23, 12, 3, 22, 17, 14, 13, 14, 17, 22, 3, 12, 23, 10, 25, 16, 9, 4, 1, 0, 1, 4, 9, 16, 25, 10, 23, 12, 3, 22, 17, 14, 13, 14, 17, 22, 3, 12, 23, 10, 25, 16, 9, 4, 1, 0, 1, 4, 9, 16, 25, 10, 23, 12, 3, 22, 17, 14, 13, 14, 17, 22, 3, 12, 23, 10, 25, 16, 9, 4, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

G. C. Greubel, Table of n, a(n) for n = 0..1000

FORMULA

G.f.: (x +4*x^2 +9*x^3 +16*x^4 +25*x^5 +10*x^6 +23*x^7 +12*x^8 +3*x^9 +22*x^10 +17*x^11 +14*x^12 +13*x^13 +14*x^14 +17*x^15 + 22*x^16 + 3*x^17 +12*x^18 +23*x^19 +10*x^20 +25*x^21 +16*x^22 +9*x^23 +4*x^24 +x^25)/(1-x^26). - Vincenzo Librandi, Dec 16 2014

a(n) = a(n-26). - G. C. Greubel, Mar 24 2016

MAPLE

A070448:=n->n^2 mod 26: seq(A070448(n), n=0..150); # Wesley Ivan Hurt, Apr 09 2017

MATHEMATICA

Table[Mod[n^2, 26], {n, 0, 200}] (* Vladimir Joseph Stephan Orlovsky, Apr 23 2011 *)

PowerMod[Range[0, 80], 2, 26] (* Harvey P. Dale, Dec 15 2014 *)

PROG

(PARI) a(n)=n^2%26 \\ Charles R Greathouse IV, Apr 06 2016

CROSSREFS

Sequence in context: A070451 A070450 A070449 * A081403 A259602 A017668

Adjacent sequences:  A070445 A070446 A070447 * A070449 A070450 A070451

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, May 12 2002

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 18 02:38 EDT 2021. Contains 343072 sequences. (Running on oeis4.)