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A092300 2*5^(n^2+2n+1)*Product_{j=1..n} (25^j-1). 7
10, 30000, 58500000000, 71406562500000000000, 54478744277343750000000000000000, 25977486943588417053222656250000000000000000000, 7741894375438878098811060190200805664062500000000000000000000000, 1442040200190701731357565969692841463256627321243286132812500000000000000000000000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

The order of the p-Clifford group for an odd prime p is a*p^(n^2+2n+1)*Product_{j=1..n} (p^(2*j)-1), where a = gcd(p+1,4).

LINKS

Table of n, a(n) for n=0..7.

G. Nebe, E. M. Rains and N. J. A. Sloane, Self-Dual Codes and Invariant Theory, Springer, Berlin, 2006.

CROSSREFS

Cf. A001309, A003956.

Cf. A092299 and A092301 (p=3), A092300 and A089989 (p=5), A090768 and A090769 (p=7), A090770 (p=2, although this is the wrong formula in that case).

Sequence in context: A203695 A181017 A055321 * A048916 A260797 A055310

Adjacent sequences:  A092297 A092298 A092299 * A092301 A092302 A092303

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Feb 10 2004

STATUS

approved

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Last modified April 6 10:05 EDT 2020. Contains 333273 sequences. (Running on oeis4.)