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A008362 Crystal ball sequence for D_8 lattice. 3
1, 113, 2705, 28129, 177697, 807505, 2908337, 8818625, 23429185, 56070193, 123302609, 252868001, 489082465, 899992081, 1586639089, 2694819713, 4429746305, 7074058225, 11009657617, 16743877985 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

LINKS

Index entries for crystal ball sequences

J. H. Conway and N. J. A. Sloane, Low-Dimensional Lattices VII: Coordination Sequences, Proc. Royal Soc. London, A453 (1997), 2369-2389 (Abstract, pdf, ps).

MAPLE

248/315*n^8+992/315*n^7+32/3*n^6+944/45*n^5+144/5*n^4+1184/45*n^3+992/63*n^2+584/105*n+1;

CROSSREFS

Sequence in context: A075030 A079098 A187519 * A200854 A012031 A175687

Adjacent sequences:  A008359 A008360 A008361 * A008363 A008364 A008365

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com) and J. H. Conway (conway(AT)math.princeton.edu)

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Last modified February 16 08:49 EST 2012. Contains 205893 sequences.