login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A156524 Number of nXn arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 73. 0
2, 2, 102, 194, 52440, 367472, 1145093308, 43695620566 (list; graph; refs; listen; history; internal format)
OFFSET

2,1

CROSSREFS

Sequence in context: A166996 A133295 A055470 * A194027 A003110 A100956

Adjacent sequences:  A156521 A156522 A156523 * A156525 A156526 A156527

KEYWORD

nonn

AUTHOR

R. H. Hardin (rhhardin(AT)att.net) Feb 09 2009

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 17 07:41 EST 2012. Contains 205998 sequences.