login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A107683 Number of perfect Skolem sets. 0
1, 1, 3, 11, 35, 114, 407, 1486, 5414, 19923, 74230, 278462, 1049318, 3972395, 15101658, 57607431, 220391316, 845366406, 3250192681, 12521965697 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

LINKS

G. Nordh, Perfect Skolem sequences

CROSSREFS

Cf. A004075, A060963, A099152.

Sequence in context: A032637 A034576 A125672 * A014335 A147474 A119143

Adjacent sequences:  A107680 A107681 A107682 * A107684 A107685 A107686

KEYWORD

nonn

AUTHOR

Ralf Stephan, Jun 10 2005

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 17 14:50 EST 2012. Contains 206050 sequences.