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A096186
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Numbers n such that 10^n+9^(n-1) is prime.
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8
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1, 2, 4, 9, 12, 14, 19, 26, 28, 72, 79, 273, 565, 990, 1166, 2205
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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MATHEMATICA
| Do[ If[ PrimeQ[10^n + 9^(n - 1)], Print[n]], {n, 4000}]
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CROSSREFS
| Cf. A082103, A093717, A093793, A093765, A096185, A093794, A093795, A096186.
Sequence in context: A096134 A058885 A022428 * A175041 A182859 A088901
Adjacent sequences: A096183 A096184 A096185 * A096187 A096188 A096189
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KEYWORD
| nonn
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AUTHOR
| Herman H. Rosenfeld (herm3(AT)pacbell.net) and Robert G. Wilson v (rgwv(AT)rgwv.com), Jun 21 2004
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