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Search: id:A064991
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| A064991 |
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In A064990, drop leading 0's from A_k (for k>0) and convert to decimal. |
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+0
2
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| 0, 1, 78, 20487601, 369071811667060977001038, 2157596228176369025492751451130809592490957353466093604326704974092869041
(list; graph; listen)
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OFFSET
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0,3
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COMMENT
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Next term is about 4.31*10^218.
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FORMULA
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a(n+1) = a(n)(4^3^n + 2^3^n - 1) + 2^3^n - 1. - David Wasserman (wasserma(AT)spawar.navy.mil), Aug 20 2002
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CROSSREFS
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Adjacent sequences: A064988 A064989 A064990 this_sequence A064992 A064993 A064994
Sequence in context: A119236 A126998 A093239 this_sequence A051326 A033399 A033251
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KEYWORD
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nonn,easy
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AUTHOR
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Michael Gilleland (megilleland(AT)yahoo.com), Oct 31 2001
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EXTENSIONS
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More terms from David Wasserman (wasserma(AT)spawar.navy.mil), Aug 20 2002
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