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A004077
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Extended Skolem sequences of order n.
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0
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2, 2, 6, 22, 48, 160, 636, 3556, 19488, 95872, 594320, 4459888, 32131648, 227072544, 1875064880, 17851780784, 165367171136, 1506506453568
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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REFERENCES
| 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
| 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
| Sequence in context: A173098 A171694 A103179 * A202743 A007985 A097090
Adjacent sequences: A004074 A004075 A004076 * A004078 A004079 A004080
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
| Extended by a(15) - a(18) Jeppe Winther Larsen (jwl(AT)itu.dk), Oct 12 2009
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