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Search: id:A100897
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| A100897 |
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Numbers with decimal expansion 7nn7. |
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+0
4
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| 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; listen)
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OFFSET
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0,1
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FORMULA
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a(n) = 7nn7 where n=0, 1, 2, 3, ....
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EXAMPLE
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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)
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CROSSREFS
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Cf. A100846.
Sequence in context: A050673 A050663 A114615 this_sequence A116278 A116332 A071131
Adjacent sequences: A100894 A100895 A100896 this_sequence A100898 A100899 A100900
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KEYWORD
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nonn,base,easy
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AUTHOR
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Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Jan 10 2005
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