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!)
A179074 A179072 for p == 1 (mod 4). 3
-2, -32, 256, -8192, -262144, 5242880, -33554432, -2684354560, 8589934592000, 932385860354048, 160159261748363264, -1125899906842624, -225179981368524800, 5260204364768739328, 43977037871723571052544 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

It appears that a(n) is even.

LINKS

Table of n, a(n) for n=1..15.

MATHEMATICA

a72[p_] := Module[{k}, k = (p-1)/2; Det @ Table[JacobiSymbol[i+j, p], {i, 1, k}, {j, 1, k}]];

a72 /@ Select[Range[1, 201, 4], PrimeQ] (* Jean-Fran├žois Alcover, Dec 05 2018 *)

CROSSREFS

Cf. A179071, A179072, A179073.

Sequence in context: A053054 A224903 A008512 * A035602 A158040 A202746

Adjacent sequences:  A179071 A179072 A179073 * A179075 A179076 A179077

KEYWORD

sign

AUTHOR

Jonathan Sondow and Wadim Zudilin, Jun 29 2010

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 November 27 16:35 EST 2021. Contains 349394 sequences. (Running on oeis4.)