Sixth column (r=5) of FS(3) staircase array A062745.

Terms

a(0) =12a(1) =43a(2) =108a(3) =228a(4) =431a(5) =753a(6) =1239a(7) =1944a(8) =2934a(9) =4287a(10) =6094a(11) =8460a(12) =11505a(13) =15365a(14) =20193a(15) =26160a(16) =33456a(17) =42291a(18) =52896a(19) =65524a(20) =80451a(21) =97977a(22) =118427a(23) =142152a(24) =169530a(25) =200967a(26) =236898a(27) =277788a(28) =324133a(29) =376461