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A225995 Number of pairs of orthogonal (-3,5) vectors of length 8*n. 1
1120, 96608512, 5476370673664, 284705020569600000, 16898172507712428441600, 995986456574626692094492672, 59516704487206110046425062572032, 3603385124651416948013919241525788672 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Row 9 of A225987.
LINKS
EXAMPLE
Some solutions for n=1
.-3..5...-3..5...-3..5....5..5...-3..5...-3..5...-3.-3...-3..5...-3..5....5..5
..5..5....5.-3....5..5...-3..5...-3..5....5..5...-3.-3....5..5....5.-3...-3..5
..5.-3....5.-3....5.-3....5..5....5..5....5..5...-3..5...-3..5....5.-3....5.-3
..5..5...-3.-3....5..5...-3..5....5.-3....5.-3....5.-3...-3..5....5..5....5..5
.-3..5...-3.-3....5..5....5..5....5..5....5.-3...-3.-3....5..5...-3..5....5.-3
..5.-3...-3.-3....5.-3...-3..5....5.-3....5..5...-3.-3....5..5....5..5....5..5
..5.-3...-3.-3...-3..5...-3..5...-3..5....5.-3....5.-3...-3..5...-3..5....5.-3
..5..5...-3.-3...-3..5....5.-3....5..5...-3..5...-3.-3....5.-3....5..5....5.-3
CROSSREFS
Sequence in context: A222695 A032779 A028464 * A122052 A207234 A207227
KEYWORD
nonn
AUTHOR
R. H. Hardin, May 22 2013
STATUS
approved

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Last modified March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)