A179074 A179072 for p == 1 (mod 4).

-2, -32, 256, -8192, -262144, 5242880, -33554432, -2684354560, 8589934592000, 932385860354048, 160159261748363264, -1125899906842624, -225179981368524800, 5260204364768739328, 43977037871723571052544

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-François 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