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!)
A275880 Solutions to a certain congruence. 2
26, 244, 305, 338, 9755, 18205, 33076, 48775, 60707, 70673, 82690, 92410, 95990, 101651, 112102, 165380, 167690, 184820, 191980, 211178, 224204, 232373, 258322, 274730, 297743, 330760, 335380, 369640, 383960, 422356, 448408, 516644, 516934, 549460, 583444 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

REFERENCES

J. B. Cosgrave and K. Dilcher, A role for generalized Fermat numbers, Math. Comp., to appear 2016; http://johnbcosgrave.com/publications.php (See paper #10). See Table 2.1.

LINKS

Lars Blomberg, Table of n, a(n) for n = 1..106

FORMULA

From Lars Blomberg, Nov 28 2016: (Start)

The Gaussian factorial is G(N,n) = prod_{j=1,N and gcd(j,n)=1} (j).

Values n are restricted to the form n=w*p^alfa, with w=q_1^beta_1 * ... * q_s^beta_s and p, q_1, ... q_s are distinct primes, p = 1(mod 3), q_1, ... q_s = -1(mod 3) with s>=0, alfa, beta_1, ... beta_s >=1. The case s = 0 is interpreted as w = 1.

Values n must also satisfy G(floor((n-1)/3), n) = 1 (mod n). (End)

CROSSREFS

Cf. A275881.

Sequence in context: A163726 A293614 A245873 * A020537 A184461 A088889

Adjacent sequences:  A275877 A275878 A275879 * A275881 A275882 A275883

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Aug 17 2016

EXTENSIONS

a(10)-a(35) from Lars Blomberg, Nov 28 2016

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 August 3 15:49 EDT 2021. Contains 346439 sequences. (Running on oeis4.)