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A156452 Number of n X n arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 10. 0
2, 0, 32, 32, 1718, 5108, 239978, 1380432, 102471151, 1435365144, 219088073110, 5750051401712, 1397876167796318, 53808016711020432 (list; graph; refs; listen; history; text; internal format)
OFFSET
2,1
LINKS
CROSSREFS
Sequence in context: A071147 A156481 A176726 * A156473 A156504 A340545
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 09 2009
STATUS
approved

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Last modified April 23 08:33 EDT 2024. Contains 371905 sequences. (Running on oeis4.)