A013768 - OEIS

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A013768

21^(3n+1).

21, 194481, 1801088541, 16679880978201, 154472377739119461, 1430568690241985328321, 13248496640331026125580781, 122694327386105632949003612841, 1136272165922724266740722458520501, 10523016528610349434285830688358359761 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,1`
	LINKS	`Vincenzo Librandi, Table of n, a(n) for n = 0..200` `Tanya Khovanova, Recursive Sequences`
	PROG	`(MAGMA) [21^(3*n+1): n in [0..10]]; // Vincenzo Librandi, Jun 27 2011`
	CROSSREFS	`Sequence in context: A189310 A068735 A172800 * A203673 A172854 A143736` `Adjacent sequences: A013765 A013766 A013767 * A013769 A013770 A013771`
	KEYWORD	`nonn,easy`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified February 16 21:51 EST 2012. Contains 205978 sequences.