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Search: id:A132152
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| A132152 |
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a(4n+k) = 4a(n+k-1)-6a(n+k-2)+4a(n+k-3), for k = 0,1,2; a(4n+3) = 7a(4n+2)-8(4n+1)+2a(4n), with a(0) = a(1) = a(2) = 0, a(3) = 1. |
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+0
1
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| 0, 0, 0, 1, 4, 10, 20, 34, 56, 100, 200, 356, 624, 1160, 2320, 4104
(list; graph; listen)
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OFFSET
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0,5
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COMMENT
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a(n+1)-2a(n)= 0, 0, 1, 2, 2, 0, -6, -12, -12, 0, -44, -88, -88, 0
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FORMULA
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Sequence is identical to its fourth differences in absolute value.
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CROSSREFS
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Cf. A000749 (0, 0, 0, 1, 4, 10, 20, 36) for which a(n)=4a(n-1)-6a(n-2)+4a(n-3).
Sequence in context: A008013 A024991 A000742 this_sequence A008234 A008114 A008116
Adjacent sequences: A132149 A132150 A132151 this_sequence A132153 A132154 A132155
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KEYWORD
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nonn,more
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AUTHOR
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Paul Curtz (bpcrtz(AT)free.fr), Nov 01 2007
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