A156389 Number of 6X6 arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to n.

1, 20, 84, 136, 110, 232, 635, 616, 308, 788, 1718, 1568, 926, 1412, 2952, 3200, 1430, 1804, 5414, 6024, 3154, 3552, 7838, 7232, 3923, 5024, 9866, 13400, 8094, 6888, 16076, 17304, 6308, 8852, 23020, 23480, 16008, 13276, 22640, 27472, 16570, 11736, 31662

Offset

0,2

Links

Table of n, a(n) for n=0..42.

Crossrefs

Sequence in context: A041778 A219473 A256869 * A044207 A044588 A172221

Adjacent sequences: A156386 A156387 A156388 * A156390 A156391 A156392

Keyword

nonn

Author

R. H. Hardin Feb 09 2009

Status

approved