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Search: id:A159334
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| A159334 |
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Transform of A056594 by the T_{1,1} transformation (see link) |
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1
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| 2, 4, 9, 23, 55, 126, 291, 678, 1578, 3667, 8523, 19815, 46066, 107089, 248950, 578740, 1345409, 3127695, 7271007, 16903042, 39294807, 91349342, 212361454, 493680487, 1147667895, 2668004163, 6202357186, 14418731129, 33519483178
(list; graph; listen)
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OFFSET
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0,1
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LINKS
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R. 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/(z^2+1))+(z/(1-3*z+2*z^2-z^3))+((1-z+z^2)/(1-3*z+2*z^2-z^3)) a(0)=2, a(1)=4, a(2)=9, a(3)=23, a(4)=55 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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CROSSREFS
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A159328, A159329, A159330, A159331
Sequence in context: A077003 A046917 A159329 this_sequence A159330 A159331 A135346
Adjacent sequences: A159331 A159332 A159333 this_sequence A159335 A159336 A159337
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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 10 2009
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