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A088265
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Numbers == 1,3,7,or 9 (mod 10^(n+1)) in increasing order.
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2
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11, 13, 17, 19, 101, 103, 107, 109, 1001, 1003, 1007, 1009, 10001, 10003, 10007, 10009, 100001, 100003, 100007, 100009, 1000001, 1000003, 1000007, 1000009
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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FORMULA
| a(4n+r) = 10^(n+1) + k, (r, k) = (1, 1), (2, 3), (3, 7) or (4, 9).
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CROSSREFS
| Cf. A088066.
Sequence in context: A206287 A045707 A032591 * A090149 A089691 A036979
Adjacent sequences: A088262 A088263 A088264 * A088266 A088267 A088268
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KEYWORD
| base,nonn
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AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Sep 28 2003
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