Largest square which is a concatenation of partitions of n; or 0 if no such number exists.

Terms

a(0) =1a(1) =0a(2) =0a(3) =121a(4) =0a(5) =0a(6) =25a(7) =0a(8) =12321a(9) =2116a(10) =0a(11) =0a(12) =5112121a(13) =0a(14) =0a(15) =121242121a(16) =0a(17) =1121513121a(18) =2511112321a(19) =0a(20) =0a(21) =213223221121a(22) =0a(23) =0a(25) =0a(28) =0a(29) =0a(31) =0a(32) =0