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A107733
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Column 2 of the array in A107735.
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0
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1, 3, 13, 11, 141, 43, 1485, 171, 15565, 683, 163021, 2731, 1707213, 10923, 17878221, 43691, 187223245, 174763, 1960627405, 699051, 20531956941, 2796203, 215013444813, 11184811, 2251650026701, 44739243, 23579585203405, 178956971, 246928622013645, 715827883, 2585870100909261, 2863311531
(list; graph; refs; listen; history; internal format)
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OFFSET
| 3,2
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COMMENTS
| Sequence has a rational g.f.
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REFERENCES
| S. Mukai, An Introduction to Invariants and Moduli, Cambridge, 2003; see p. 483.
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FORMULA
| a(n) = 1 + Sum_{j=1..g} 2^(2j-1) if n = 2g+2, = 1 + 4 Sum_{j=1..g} C(2g+1, 2j) 5^(j-1) if n = 2g+1.
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CROSSREFS
| Sequence in context: A107802 A142351 A121565 * A054767 A137947 A168437
Adjacent sequences: A107730 A107731 A107732 * A107734 A107735 A107736
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Jun 10 2005
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EXTENSIONS
| More terms from Emeric Deutsch, Jun 22 2005
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