Number of 10 X 10 arrays of squares of integers, symmetric under 90-degree rotation, with all rows summing to n.
A156404
Number of 10 X 10 arrays of squares of integers, symmetric under 90-degree rotation, with all rows summing to n.
Terms
- a(0) =1a(1) =0a(2) =810a(3) =0a(4) =23280a(5) =0a(6) =68180a(7) =0a(8) =175765a(9) =0a(10) =760131a(11) =0a(12) =2108280a(13) =0a(14) =3657680a(15) =0a(16) =5281910a(17) =0a(18) =13033260a(19) =0a(20) =29182380a(21) =0a(22) =37198440a(23) =0a(24) =46154300a(25) =0a(26) =85583500a(27) =0a(28) =202480300a(29) =0
External references
- oeis: A156404