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A066163 Let p be a prime of the form 4k+1; sequence gives (q!^2 + 4)/p where q = (p-3)/2. 1
1, 1108, 1494212, 1337096139435608276, 3419285040690464059059891892, 360915376914019980818136688390244, 4539578056760982039383691063124612231245283018868, 1281586150064588021396889740995557733625358136974688524590164 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Harry J. Smith, Table of n, a(n) for n = 1..30

Ed Pegg Jr., Math. Puzzles

PROG

(PARI) { n=0; for (m=1, 10^9, p=prime(m); if (frac((p - 1)/4) == 0, q = (p - 3)/2; write("b066163.txt", n++, " ", (q!^2 + 4)/p); if (n==30, return)) ) } \\ Harry J. Smith, Feb 03 2010

CROSSREFS

Sequence in context: A172678 A172774 A234156 * A336172 A252010 A036105

Adjacent sequences:  A066160 A066161 A066162 * A066164 A066165 A066166

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Dec 13 2001

STATUS

approved

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Last modified June 25 09:38 EDT 2022. Contains 354835 sequences. (Running on oeis4.)