a(n) is the number of points in the interior of the n-th figure shown in A255011 (meaning the figure with 4n points on the perimeter).

A334690

a(n) is the number of points in the interior of the n-th figure shown in A255011 (meaning the figure with 4n points on the perimeter).

Terms

    a(0) =1a(1) =29a(2) =245a(3) =801a(4) =2737a(5) =4801a(6) =12265a(7) =19209a(8) =33513a(9) =49537a(10) =87641a(11) =101933a(12) =178413a(13) =220057a(14) =286297a(15) =379033a(16) =551601a(17) =606169a(18) =880217a(19) =951365a(20) =1208965a(21) =1507433a(22) =1947785a(23) =2002573a(24) =2624309a(25) =3055989a(26) =3550317a(27) =3954937a(28) =5068921a(29) =5062033

External references