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A024127 11^n-1. 1
0, 10, 120, 1330, 14640, 161050, 1771560, 19487170, 214358880, 2357947690, 25937424600, 285311670610, 3138428376720, 34522712143930, 379749833583240, 4177248169415650, 45949729863572160, 505447028499293770 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

COMMENTS

Numbers n for which the expression 11^n/(n+1) is an integer. - Paolo P. Lava (paoloplava(AT)gmail.com), May 29 2006

FORMULA

G.f.: 1/(1-11*x)-1/(1-x). E.g.f.: e^(11*x)-e^x. [From Mohammad K. Azarian (azarian(AT)evansville.edu), Jan 14 2009]

a(n) = 11*a(n-1)+10 (with a(0)=0). [From Vincenzo Librandi, Nov 19 2010]

CROSSREFS

Sequence in context: A069673 A069498 A182605 * A005949 A027568 A034255

Adjacent sequences:  A024124 A024125 A024126 * A024128 A024129 A024130

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified February 17 03:29 EST 2012. Contains 205978 sequences.