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A119600 4*product( (3^i+1)^2, i=1..n-1). 0
4, 4, 64, 6400, 5017600, 33738342400, 2008645953126400, 1070407428421058560000, 5124408580006984170864640000, 220656234047362257307900743516160000, 85495432669493277396354169745064287272960000, 298114237913837782686540845369489025952802406400000000, 9355246290649672947599943358541996936410690283965618585600000000 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

REFERENCES

R. Chapman et al., 2-modular lattices from ternary codes, J. Th. des Nombres de Bordeaux, 14 (2002), 73-85.

CROSSREFS

Sequence in context: A196180 A156483 A124399 * A107053 A068376 A131592

Adjacent sequences:  A119597 A119598 A119599 * A119601 A119602 A119603

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Jun 04 2006

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Last modified February 15 14:20 EST 2012. Contains 205811 sequences.