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A131434 Number of prime knots on n crossings having Arf invariant 1. 1
0, 0, 1, 1, 1, 2, 4, 11, 24, 83 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,6

LINKS

Table of n, a(n) for n=1..10.

Eric Weisstein's World of Mathematics, Arf Invariant

CROSSREFS

Cf. A131433.

Sequence in context: A230984 A196195 A205500 * A100550 A071973 A086424

Adjacent sequences:  A131431 A131432 A131433 * A131435 A131436 A131437

KEYWORD

nonn,more

AUTHOR

Eric W. Weisstein, Jul 10, 2007

STATUS

approved

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Last modified April 25 04:22 EDT 2014. Contains 240994 sequences.