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Search: id:A055374
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| A055374 |
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Invert transform applied three times to Pascal's triangle A007318. |
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+0
3
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| 1, 1, 1, 4, 8, 4, 16, 48, 48, 16, 64, 256, 384, 256, 64, 256, 1280, 2560, 2560, 1280, 256, 1024, 6144, 15360, 20480, 15360, 6144, 1024, 4096, 28672, 86016, 143360, 143360, 86016, 28672, 4096, 16384, 131072, 458752, 917504, 1146880, 917504
(list; table; graph; listen)
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OFFSET
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0,4
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COMMENT
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Triangle T(n,k), 0<=k<=n, read by rows, given by [1, 3, 0, 0, 0, 0, 0, 0, 0, ...] DELTA [1, 3, 0, 0, 0, 0, 0, 0, 0, ...] where DELTA is the operator defined in A084938 . - DELEHAM Philippe (kolotoko(aT)lagoon.nc), Aug 10 2005
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LINKS
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Index entries for triangles and arrays related to Pascal's triangle
N. J. A. Sloane, Transforms
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FORMULA
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a(n, k)=4^(n-1)*C(n, k).
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EXAMPLE
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1; 1,1; 4,8,4; 16,48,48,16; 64,256,384,256,64; ...
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CROSSREFS
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Cf. A000302, A007318, A055372, A055373.
Sequence in context: A028587 A087260 A019254 this_sequence A019246 A019192 A133921
Adjacent sequences: A055371 A055372 A055373 this_sequence A055375 A055376 A055377
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KEYWORD
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nonn,tabl
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AUTHOR
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Christian G. Bower (bowerc(AT)usa.net), May 16 2000
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