Statements (19)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
integer sequence
|
| gptkbp:category |
integer sequences
|
| gptkbp:defines |
numbers of the form n*2^n+1, where n is a natural number
|
| gptkbp:discoveredBy |
1905
|
| gptkbp:field |
number theory
|
| gptkbp:first_terms |
25
3 9 |
| gptkbp:firstPrimeIndex |
1
|
| gptkbp:firstPrimeTerm |
3
|
| https://www.w3.org/2000/01/rdf-schema#label |
Cullen numbers
|
| gptkbp:namedAfter |
gptkb:James_Cullen
|
| gptkbp:OEIS |
A002064
|
| gptkbp:property |
almost all Cullen numbers are composite
few Cullen numbers are prime |
| gptkbp:relatedTo |
Woodall numbers
|
| gptkbp:sequence |
C_n = n*2^n + 1
|
| gptkbp:bfsParent |
gptkb:James_Cullen
|
| gptkbp:bfsLayer |
7
|