Statements (24)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
integer sequence
|
| gptkbp:appearsIn |
gptkb:OEIS
|
| gptkbp:author |
gptkb:N._J._A._Sloane
|
| gptkbp:describedBy |
Number of different ways of drawing non-intersecting chords between n points on a circle
|
| gptkbp:first_terms |
2
1 21 323 4 9 51 127 835 |
| gptkbp:hasKeyword |
easy
nice nonn |
| https://www.w3.org/2000/01/rdf-schema#label |
A007570
|
| gptkbp:name |
Motzkin numbers
|
| gptkbp:OEIS |
gptkb:A007570
|
| gptkbp:recurrence |
M(n) = M(n-1) + sum_{k=0}^{n-2} M(k)*M(n-2-k) for n>1, M(0)=M(1)=1
|
| gptkbp:relatedTo |
gptkb:Catalan_numbers
|
| gptkbp:sequence |
combinatorial
|
| gptkbp:bfsParent |
gptkb:A000081
|
| gptkbp:bfsLayer |
8
|