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Search: id:A108985
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| A108985 |
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Expansion of (x+1)*(x^3-x^2-x-1)/((1-x)*(x^2+2*x-1)*(x^2+x+1)). |
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+0
1
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| 1, 4, 11, 27, 66, 161, 389, 940, 2271, 5483, 13238, 31961, 77161, 186284, 449731, 1085747, 2621226, 6328201, 15277629, 36883460, 89044551, 214972563, 518989678, 1252951921, 3024893521, 7302738964, 17630371451, 42563481867, 102757335186
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OFFSET
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0,2
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COMMENT
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A floretion-generated sequence calculated using the same rules given for A108618 with initial seed x = - .5'ii' - .5'jj' + .5'kk' - .5'jk' - .5'kj' + .5e; version: "tes". Note: replacing "tessum(*)seq" with "tesseq" in the program code gives A001333.
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PROGRAM
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2tessum(*)seq[ - .5'ii' - .5'jj' + .5'kk' - .5'jk' - .5'kj' + .5e] = 2tessum(*)seq[(- .5'i + .5'j - .5i' + .5j' - 'kk' - .5'ik' - .5'jk' - .5'ki' - .5'kj')*(.5'i + .5i')]
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CROSSREFS
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Cf. A108618, A108986, A108987, A108988.
Sequence in context: A080869 A137229 A027439 this_sequence A014151 A096124 A090539
Adjacent sequences: A108982 A108983 A108984 this_sequence A108986 A108987 A108988
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KEYWORD
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easy,nonn
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AUTHOR
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Creighton Dement (creighton.k.dement(AT)uni-oldenburg.de), Jun 15 2005
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