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A005905
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Number of points on surface of truncated tetrahedron: 14n^2 + 2 for n>0, a(0)=1.
(Formerly M5001)
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2
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1, 16, 58, 128, 226, 352, 506, 688, 898, 1136, 1402, 1696, 2018, 2368, 2746, 3152, 3586, 4048, 4538, 5056, 5602, 6176, 6778, 7408, 8066, 8752, 9466, 10208, 10978, 11776, 12602, 13456
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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REFERENCES
| H. S. M. Coxeter, ``Polyhedral numbers,'' in R. S. Cohen et al., editors, For Dirk Struik. Reidel, Dordrecht, 1974, pp. 25-35.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
B. K. Teo and N. J. A. Sloane, Magic numbers in polygonal and polyhedral clusters, Inorgan. Chem. 24 (1985), 4545-4558.
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LINKS
| S. Plouffe, Approximations de S\'{e}ries G\'{e}n\'{e}ratrices et Quelques Conjectures, Dissertation, Universit\'{e} du Qu\'{e}bec \`{a} Montr\'{e}al, 1992.
S. Plouffe, 1031 Generating Functions and Conjectures, Universit\'{e} du Qu\'{e}bec \`{a} Montr\'{e}al, 1992.
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MAPLE
| A005905:=-(z+1)*(z**2+12*z+1)/(z-1)**3; [S. Plouffe in his 1992 dissertation.]
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CROSSREFS
| Cf. A206399.
Sequence in context: A169882 A202993 A187277 * A177890 A063521 A027117
Adjacent sequences: A005902 A005903 A005904 * A005906 A005907 A005908
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KEYWORD
| nonn,easy,changed
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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