Triangle read by rows, n-th row = n terms of A000255: (1, 3, 11, 53, 309, ...); right border = A000166 starting (1, 2, 9, 44, 265, ...).

A159610

Triangle read by rows, n-th row = n terms of A000255: (1, 3, 11, 53, 309, ...); right border = A000166 starting (1, 2, 9, 44, 265, ...).

Terms

    a(0) =1a(1) =3a(2) =2a(3) =11a(4) =11a(5) =9a(6) =53a(7) =53a(8) =53a(9) =44a(10) =309a(11) =309a(12) =309a(13) =309a(14) =265a(15) =2119a(16) =2119a(17) =2119a(18) =2119a(19) =2119a(20) =1854a(21) =16687a(22) =16687a(23) =16687a(24) =16687a(25) =16687a(26) =14833a(27) =148329a(28) =148329a(29) =148329

External references