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!)
A028802 Nonsquares mod 89. 1
3, 6, 7, 12, 13, 14, 15, 19, 23, 24, 26, 27, 28, 29, 30, 31, 33, 35, 37, 38, 41, 43, 46, 48, 51, 52, 54, 56, 58, 59, 60, 61, 62, 63, 65, 66, 70, 74, 75, 76, 77, 82, 83, 86 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..44.

MATHEMATICA

Select[Range[88], JacobiSymbol[#, 89] == -1 &] (* Harvey P. Dale, Mar 01 2015 *)

PROG

(Scala) (0 to 88).diff((1 to 89).map(n => n * n % 89)) // Alonso del Arte, Jan 24 2020

CROSSREFS

Cf. A010450 (complement), A096013 (row 89).

Sequence in context: A333790 A333001 A092150 * A141742 A004755 A004760

Adjacent sequences:  A028799 A028800 A028801 * A028803 A028804 A028805

KEYWORD

nonn,fini,full,easy

AUTHOR

N. J. A. Sloane

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 July 24 05:05 EDT 2021. Contains 346273 sequences. (Running on oeis4.)