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A036086
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Centered cube numbers: (n+1)^8+n^8.
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1
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1, 257, 6817, 72097, 456161, 2070241, 7444417, 22542017, 59823937, 143046721, 314358881, 644340577, 1245712417, 2291519777, 4038679681, 6857857921, 11270724737, 17995718017, 28003523617, 42583563041
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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REFERENCES
| 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
| Vincenzo Librandi, Table of n, a(n) for n = 0..10000
Index to sequences with linear recurrences with constant coefficients, signature (9,-36,84,-126,126,-84,36,-9,1).
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FORMULA
| G.f. -(x^6+246*x^5+4047*x^4+11572*x^3+4047*x^2+246*x+1)*(1+x)^2 / (x-1)^9 . - R. J. Mathar, Oct 13 2011
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PROG
| (MAGMA) [(n+1)^8+n^8: n in [0..20]]; // Vincenzo Librandi, Aug 27 2011
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CROSSREFS
| Sequence in context: A034682 A017679 A013956 * A000542 A023877 A168116
Adjacent sequences: A036083 A036084 A036085 * A036087 A036088 A036089
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KEYWORD
| nonn,easy
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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