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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

R. H. Hardin, Table of n, a(n) for n = 1..67

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

Adjacent sequences:  A225992 A225993 A225994 * A225996 A225997 A225998

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 22 2013

STATUS

approved

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Last modified September 23 11:53 EDT 2020. Contains 337310 sequences. (Running on oeis4.)