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A099175
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a(1) = 1, a(2) = 8; for n > 2: a(n) = a(n-1)*(3*a(n-1)-2).
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1
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1, 8, 176, 92576, 25710762176, 1983129874961075240576, 11798412302889389755255045998938726679954176, 417607598606915139792416465578985202696175989567316713156694229302007260054247019608576
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| n*(3n-2) is the n-th octogonal number.
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MATHEMATICA
| Join[{1}, NestList[ #*(3*# - 2) &, 8, 7]]
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CROSSREFS
| Sequence in context: A024109 A027464 A064342 * A000839 A001596 A159326
Adjacent sequences: A099172 A099173 A099174 * A099176 A099177 A099178
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KEYWORD
| nonn
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AUTHOR
| Jonathan Vos Post (jvospost3(AT)gmail.com), Nov 15 2004
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EXTENSIONS
| Edited by Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Jul 25 2007
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