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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
OFFSET
1,3
CROSSREFS
KEYWORD
nonn
AUTHOR
Ralf Stephan, Jun 10 2005
STATUS
approved