|
| |
|
|
A100897
|
|
Numbers with decimal expansion 7nn7.
|
|
3
| |
|
|
7007, 7117, 7227, 7337, 7447, 7557, 7667, 7777, 7887, 7997, 710107, 711117, 712127, 713137, 714147, 715157, 716167, 717177, 718187, 719197, 720207, 721217, 722227, 723237, 724247, 725257, 726267, 727277, 728287, 729297, 730307
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 0,1
|
|
|
FORMULA
| a(n) = 7nn7 where n=0, 1, 2, 3, ....
|
|
|
EXAMPLE
| If n=6, 7nn7 is 7667
If n=15, 7nn7 is 715157 (a prime)
If n=18, 7nn7 is 718187 (a prime)
If n=19, 7nn7 is 719197 (a prime)
|
|
|
CROSSREFS
| Cf. A100846.
Sequence in context: A050673 A050663 A114615 * A206757 A192847 A116278
Adjacent sequences: A100894 A100895 A100896 * A100898 A100899 A100900
|
|
|
KEYWORD
| nonn,base,easy
|
|
|
AUTHOR
| Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Jan 10 2005
|
| |
|
|
