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A120804
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Primes with consecutive digits descending.
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4
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2, 3, 5, 7, 43, 76543, 4321098765432109876543210987654321098765432109876543210987654321, 43210987654321098765432109876543210987654321098765432109876543210987654321098765432109876543210987654321098765432109876543210987654321098765432109876543210987654321098765432109
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| Digits can be in descending order. After 0 comes 9.
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MATHEMATICA
| f[n_] := Block[{d = Reverse@ Range@n, t = Table[1, {n}]}, Select[ Drop[ Union@ Flatten@ Table[ FromDigits[ Mod[d + i*t, 10]], {i, 10}], 2], PrimeQ@# &]]; Array[f, 1000] // Flatten
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CROSSREFS
| Cf. A006055, A120805.
Sequence in context: A092066 A028981 A052016 * A171020 A178237 A118842
Adjacent sequences: A120801 A120802 A120803 * A120805 A120806 A120807
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KEYWORD
| nonn,base
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AUTHOR
| Robert G. Wilson v (rgwv(AT)rgwv.com), Jul 05 2006
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