|
| |
|
|
A141603
|
|
Odd composites of the form n-(p(n+2)-p(n)/(p(n+1)-p(n-1)), where p(n)=n-th prime.
|
|
0
| |
|
|
9, 21, 25, 27, 33, 63, 77, 81, 93, 105, 125, 143, 147, 153, 165, 171, 175, 185, 235, 243, 247, 249, 255, 273, 285, 301, 321, 335, 345, 363, 405, 437, 473, 475, 483, 517, 529, 533, 559, 567, 579, 585, 591, 603, 627, 671, 689, 711, 767, 789, 793, 825, 861, 873, 891, 897
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,1
|
|
|
COMMENTS
| Entries are not repeated and shown in natural order.
|
|
|
EXAMPLE
| n=10: 10-(37-29)/(31-23)=9=a(1).
n=22: 22-(89-79)/(83-73)=21=a(2).
n=26: 26-(107-101)/(103-97)=25=a(3).
n=28: 28-(113-107)/(109-103)=27=a(4).
n=34: 34-(151-139)/(149-137)=33=a(5).
|
|
|
CROSSREFS
| Cf. A000040.
Sequence in context: A111171 A067887 A174870 * A138786 A139392 A154384
Adjacent sequences: A141600 A141601 A141602 * A141604 A141605 A141606
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| Juri-Stepan Gerasimov (2stepan(AT)rambler.ru), Sep 10 2008
|
|
|
EXTENSIONS
| Corrected and extended by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 26 2008
|
| |
|
|
