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A016150
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Expansion of 1/((1-4x)(1-7x)).
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1
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1, 11, 93, 715, 5261, 37851, 269053, 1899755, 13363821, 93808891, 657710813, 4608169995, 32273967181, 225984879131, 1582162589373, 11076211867435, 77537778039341, 542781626144571, 3799540102488733
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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FORMULA
| a(n)=[(7^(n+1))-4^(n+1)]/3; a(0)=1. a(n)=11a(n-1)-28a(n-2); n>0; a(0)=1 - Barry E. Williams, Jan 13 2000
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MATHEMATICA
| Join[{a=1, b=11}, Table[c=11*b-28*a; a=b; b=c, {n, 60}]] (*From Vladimir Joseph Stephan Orlovsky, Jan 31 2011*)
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PROG
| (Other) sage: [lucas_number1(n, 11, 28) for n in xrange(1, 20)]# [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Apr 27 2009]
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CROSSREFS
| Sequence in context: A044643 A025507 A081575 * A115203 A164547 A016203
Adjacent sequences: A016147 A016148 A016149 * A016151 A016152 A016153
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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