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3, 81, 2187, 59049, 1594323, 43046721, 1162261467, 31381059609, 847288609443, 22876792454961, 617673396283947, 16677181699666569, 450283905890997363, 12157665459056928801, 328256967394537077627, 8862938119652501095929
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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LINKS
| Vincenzo Librandi, Table of n, a(n) for n = 0..200
Tanya Khovanova, Recursive Sequences
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FORMULA
| a(n)=27*a(n-1), n>0 ; a(0)=3 . G.f.: 3/(1-27*x). [From Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Nov 25 2008]
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MAPLE
| seq(3^(3*n+1), n=0..15); # Nathaniel Johnston, Jun 26 2011
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PROG
| (MAGMA) [3^(3*n+1): n in [0..25]]; // Vincenzo Librandi, May 25 2011
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CROSSREFS
| Cf. A013730, A013733, A013734.
Sequence in context: A123656 A060851 A116179 * A207229 A207222 A207007
Adjacent sequences: A013729 A013730 A013731 * A013733 A013734 A013735
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KEYWORD
| nonn,easy
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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