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Search: id:A004077
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| A004077 |
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Extended Skolem sequences of order n. |
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+0
1
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| 2, 2, 6, 22, 48, 160, 636, 3556, 19488, 95872, 594320, 4459888, 32131648, 227072544, 1875064880, 17851780784, 165367171136, 1506506453568
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OFFSET
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1,1
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REFERENCES
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CRC Handbook of Combinatorial Designs, 1996, p. 460.
Jeppe Winther Larsen, Counting the Skolem sequences using inclusion-exclusion, 2009 (Master's thesis) [From Jeppe Winther Larsen (jwl(AT)itu.dk), Oct 12 2009]
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LINKS
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Jeppe Winther Larsen, Counting the Skolem sequences using inclusion-exclusion, 2009 [From Jeppe Winther Larsen (jwl(AT)itu.dk), Oct 12 2009]
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CROSSREFS
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Sequence in context: A019575 A138800 A103179 this_sequence A007985 A097090 A085403
Adjacent sequences: A004074 A004075 A004076 this_sequence A004078 A004079 A004080
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
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Extended by a(15) - a(18) Jeppe Winther Larsen (jwl(AT)itu.dk), Oct 12 2009
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