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18, 5832, 1889568, 612220032, 198359290368, 64268410079232, 20822964865671168, 6746640616477458432, 2185911559738696531968, 708235345355337676357632, 229468251895129407139872768
(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)=324*a(n-1), n>0 ; a(0)=18 . G.f.: 18/(1-324*x). [From Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Nov 28 2008]
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MAPLE
| seq(18^(2*n+1), n=0..10); # Nathaniel Johnston, Jun 25 2011
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PROG
| (MAGMA) [18^(2*n+1): n in [0..15]]; // Vincenzo Librandi, Jun 26 2011
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CROSSREFS
| Cf. A013708-A013722, A013724-A013729.
Sequence in context: A036214 A188799 A058976 * A159405 A060617 A201986
Adjacent sequences: A013720 A013721 A013722 * A013724 A013725 A013726
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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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