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Search: id:A159350
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| A159350 |
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Transform of A056594 by the T_{0,0} transformation (see link) |
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+0
1
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| 1, 1, 1, 4, 11, 24, 54, 127, 297, 689, 1600, 3721, 8652, 20112, 46753, 108689, 252673, 587392, 1365519, 3174448, 7379698, 17155715, 39882197, 92714861, 215535904, 501060185, 1164823608, 2707886360, 6295072049, 14634267033, 34020543361
(list; graph; listen)
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OFFSET
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0,4
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LINKS
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Richard Choulet : Curtz-like transformation
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FORMULA
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O.g.f f(z)=((1-z)^2/(1-3*z+2*z^2-z^3))*(1/(1+z^2)).
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EXAMPLE
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a(0)=1, a(1)=1, a(2)=1, a(3)=4, a(4)=11 and for n>=0 a(n+5)=3*a(n+4)-3*a(n+3)+4*a(n+2)-2*a(n+1)+a(n).
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MAPLE
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a(0):=1: a(1):=1: a(2):=1: a(3):=4: a(4):=11: for n from 0 to 31 do a(n+5):=3*a(n+4)-3*a(n+3)+4*a(n+2)-2*a(n+1)+a(n): od: seq(a(i), i=0..31);
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CROSSREFS
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A137531, A159347, A159348, A159349
Sequence in context: A160860 A143075 A007678 this_sequence A159348 A159349 A115294
Adjacent sequences: A159347 A159348 A159349 this_sequence A159351 A159352 A159353
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KEYWORD
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easy,nonn
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AUTHOR
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Richard Choulet (richardchoulet(AT)yahoo.fr), Apr 11 2009
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