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A156427 Number of 19 X 19 arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to n. 0
1, 168992, 5552479800, 12483723152016, 12976446818207108, 1865501254974930048 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
CROSSREFS
Sequence in context: A186550 A151618 A156426 * A185474 A034211 A308635
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 09 2009
STATUS
approved

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Last modified May 27 03:56 EDT 2024. Contains 372847 sequences. (Running on oeis4.)