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Search: id:A016743
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A016743 Even cubes: (2n)^3. +0
3
0, 8, 64, 216, 512, 1000, 1728, 2744, 4096, 5832, 8000, 10648, 13824, 17576, 21952, 27000, 32768, 39304, 46656, 54872, 64000, 74088, 85184, 97336, 110592, 125000, 140608, 157464, 175616, 195112 (list; graph; listen)
OFFSET

0,2

COMMENT

Number of permutations of 4 distinct letters (ABCD) each with n copies such that 4n-3 remain fixed points. E.g. if AAAAABBBBBCCCCCDDDDD (4*5=20 letters) then 20-3=17 fixed points:n5=100. - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Feb 02 2006

CROSSREFS

Cf. A016755.

Cf. A033581.

Sequence in context: A043152 A044195 A153808 this_sequence A086114 A117219 A045825

Adjacent sequences: A016740 A016741 A016742 this_sequence A016744 A016745 A016746

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified December 17 23:36 EST 2009. Contains 170922 sequences.


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