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Search: id:A129936
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| A129936 |
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Combinations starting at three related to three minus m*(m-1)/2 starting at m=3: as like an algebriac projective variety dimension for SO(3,n) Lorentz type manifolds. |
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+0
1
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| -2, -2, 0, 5, 14, 28, 48, 75, 110, 154, 208, 273, 350, 440, 544, 663, 798, 950, 1120, 1309, 1518, 1748, 2000, 2275, 2574, 2898, 3248, 3625, 4030, 4464, 4928
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OFFSET
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1,1
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COMMENT
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The result variety dimension is zero for n+3=5 or SO(3,2). The 208 and 273 dimensions correspond to very near Mu and Pi meson weights in electron masses.
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REFERENCES
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http://mathworld.wolfram.com/SchubertVariety.html
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FORMULA
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a(n) = binomial[n + 3, 3] - (n + 3)*(n + 2)/2
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MATHEMATICA
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f[n_] = Binomial[n + 3, 3] - (n + 3)*(n + 2)/2; Table[f[n], {n, 0, 30}]
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CROSSREFS
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Sequence in context: A052079 A088972 A100334 this_sequence A076256 A127467 A140333
Adjacent sequences: A129933 A129934 A129935 this_sequence A129937 A129938 A129939
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KEYWORD
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nonn,uned
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AUTHOR
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Roger L. Bagula (rlbagulatftn(AT)yahoo.com), Jun 09 2007
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