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A097372
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Numbers n such that n=(d_1+6)*(d_2+6)*...*(d_k+6) where d_1 d_2 ... d_k is the decimal expansion of n.
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7
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90, 840, 4320, 59400, 60480, 917280, 2419200, 34992000, 3714984000, 460522782720, 896168448000, 2194698240000, 39109522636800, 229419122688000, 239446056960000, 650997662515200, 3954407288832000, 182279345504256000, 883270791696384000, 275333274192936960000
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OFFSET
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1,1
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LINKS
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EXAMPLE
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90 is in the sequence because 90 = (9+6)*(0+6).
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MATHEMATICA
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Do[h=IntegerDigits[n]; l=Length[h]; If[n==Product[h[[k]]+6, {k, l}], Print[n]], {n, 130000000}]
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CROSSREFS
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KEYWORD
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base,nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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