A156403 Number of 10 X 10 arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to n.

1, 312, 13290, 156128, 709332, 1578064, 4220548, 17605696, 42440517, 56568904, 102471151, 332810880, 624439948, 662224128, 977782336, 2727888448, 4701559354, 4686068520, 5468265896, 13526490400, 23873894500, 23882769984, 23258023832

Offset

0,2

Links

Table of n, a(n) for n=0..22.

Crossrefs

Sequence in context: A289793 A364992 A022044 * A296527 A107508 A015704

Adjacent sequences: A156400 A156401 A156402 * A156404 A156405 A156406

Keyword

nonn

Author

R. H. Hardin, Feb 09 2009

Status

approved