One-third of the number of simple intersection points in the interior of the n-th triangle described in A092867 and A366479.

A366480

One-third of the number of simple intersection points in the interior of the n-th triangle described in A092867 and A366479.

Terms

    a(0) =0a(1) =1a(2) =14a(3) =41a(4) =148a(5) =351a(6) =715a(7) =1391a(8) =2258a(9) =3566a(10) =5609a(11) =8582a(12) =11684a(13) =17126a(14) =22429a(15) =29061a(16) =37894a(17) =50820a(18) =62377a(19) =80314a(20) =96153

External references