Self-convolution of array T given by A008288.

Terms

a(0) =1a(1) =2a(2) =11a(3) =52a(4) =269a(5) =1414a(6) =7575a(7) =41064a(8) =224665a(9) =1237898a(10) =6859555a(11) =38187164a(12) =213408805a(13) =1196524814a(14) =6727323439a(15) =37915058384a(16) =214140178225