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A023370
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a(n+1) = a(n) converted to base 7 from base 3 (written in base 10).
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0
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3, 7, 15, 63, 735, 117663, 376611711, 541418425729727, 49349984138571749904574011, 1338582341211107721547432508333066741828922851, 36471417839301806650071044099094271952733028881102465703717269909932159185709375
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| a(12) has 141 digits -- Harvey P. Dale, May 24 2011.
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MATHEMATICA
| NestList[FromDigits[IntegerDigits[#, 3], 7]&, 3, 10] (* From Harvey P. Dale, May 24 2011 *)
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CROSSREFS
| Sequence in context: A080567 A146448 A192169 * A181071 A096422 A154795
Adjacent sequences: A023367 A023368 A023369 * A023371 A023372 A023373
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KEYWORD
| nonn
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AUTHOR
| David W. Wilson (davidwwilson(AT)comcast.net)
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EXTENSIONS
| a(11) from Harvey P. Dale, May 24 2011.
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