A155650 - OEIS

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A155650

7^n - 6^n + 1.

1, 2, 14, 128, 1106, 9032, 70994, 543608, 4085186, 30275912, 222009074, 1614529688, 11664504866, 83828316392, 599858908754, 4277376525368, 30411820662146, 215703854542472, 1526853641242034, 10789535445362648 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	LINKS	`Index to sequences with linear recurrences with constant coefficients, signature (14,-55,42).`
	FORMULA	`G.f.: 1/(1-7x)-1/(1-6x)+1/(1-x). E.g.f.: e^(7x)-e^(6x)+e^x.` `a(n)=13a(n-1)-42a(n-2)+30 with a(0)=1, a(1)=2 [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Jul 21 2010]`
	PROG	`(PARI) a(n)= 7^n-6^n+1 \\ Charles R Greathouse IV, Dec 22 2011`
	CROSSREFS	`Sequence in context: A199560 A060468 A121082 * A168658 A146971 A048990` `Adjacent sequences: A155647 A155648 A155649 * A155651 A155652 A155653`
	KEYWORD	`nonn,easy`
	AUTHOR	`Mohammad K. Azarian (azarian(AT)evansville.edu), Jan 31 2009`

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Last modified February 16 06:46 EST 2012. Contains 205867 sequences.