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A050297 Number of scalars which can be constructed from the Riemann tensor and metric tensor in n dimensions. 0
0, 1, 3, 14, 40, 90, 175, 308, 504, 780, 1155, 1650, 2288, 3094, 4095, 5320, 6800, 8568, 10659, 13110, 15960, 19250, 23023, 27324, 32200, 37700, 43875, 50778, 58464, 66990, 76415, 86800, 98208, 110704, 124355, 139230, 155400, 172938 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

LINKS

Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.

FORMULA

a(2)=1, otherwise a(n)=n(n-1)(n-2)(n+3)/12

CROSSREFS

Sequence in context: A174517 A034130 A005701 * A117662 A196236 A104905

Adjacent sequences:  A050294 A050295 A050296 * A050298 A050299 A050300

KEYWORD

nonn

AUTHOR

Eric Weisstein (eric(AT)weisstein.com)

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Last modified February 13 05:58 EST 2012. Contains 205436 sequences.