A107683 Number of perfect Skolem sets.

1, 1, 3, 11, 35, 114, 407, 1486, 5414, 19923, 74230, 278462, 1049318, 3972395, 15101658, 57607431, 220391316, 845366406, 3250192681, 12521965697

Offset

1,3

Links

Table of n, a(n) for n=1..20.

G. Nordh, Perfect Skolem sequences

Crossrefs

Cf. A004075, A060963, A099152.

Sequence in context: A032637 A034576 A125672 * A259400 A320087 A014335

Adjacent sequences: A107680 A107681 A107682 * A107684 A107685 A107686

Keyword

nonn

Author

Ralf Stephan, Jun 10 2005

Status

approved