Transpose of square array A276586.

Terms

a(0) =1a(1) =3a(2) =2a(3) =11a(4) =8a(5) =6a(6) =55a(7) =44a(8) =36a(9) =30a(10) =375a(11) =320a(12) =276a(13) =240a(14) =210a(15) =3731a(16) =3356a(17) =3036a(18) =2760a(19) =2520a(20) =2310a(21) =47743a(22) =44012a(23) =40656a(24) =37620a(25) =34860a(26) =32340a(27) =30030a(28) =777771a(29) =730028