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A001293 Leech triangle: k-th number (0<=k<=n) in n-th row (0<=n) is number of octads in S(5,8,24) containing k given points and missing n-k given points. 0
759, 506, 253, 330, 176, 77, 210, 120, 56, 21, 130, 80, 40, 16, 5, 78, 52, 28, 12, 4, 1, 46, 32, 20, 8, 4, 0, 1, 30, 16, 16, 4, 4, 0, 0, 1, 30, 0, 16, 0, 4, 0, 0, 0, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,1

REFERENCES

F. J. MacWilliams and N. J. A. Sloane, The Theory of Error-Correcting Codes, Elsevier-North Holland, 1978, p. 68.

J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 278.

Handbook of Combinatorics, North-Holland '95, p. 720.

CRC Handbook of Combinatorial Designs, 1996, p. 69.

LINKS

Table of n, a(n) for n=0..44.

Index entries for sequences related to Steiner systems

EXAMPLE

759; 506,253; 330,176,77; 210,120,56,21; 130,80,40,16,5; ...

CROSSREFS

Sequence in context: A104336 A157830 A105547 * A001380 A001920 A225022

Adjacent sequences:  A001290 A001291 A001292 * A001294 A001295 A001296

KEYWORD

nonn,tabl,fini,full,nice

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified January 19 16:21 EST 2019. Contains 319307 sequences. (Running on oeis4.)