This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A067415 #5 Jun 29 2023 10:47:41 %S A067415 1,9,144,2304,36864,589824,9437184,150994944,2415919104,38654705664, %T A067415 618475290624,9895604649984,158329674399744,2533274790395904, %U A067415 40532396646334464,648518346341351424 %N A067415 Eighth column of triangle A067410. %H A067415 <a href="/index/Rec#order_01">Index entries for linear recurrences with constant coefficients</a>, signature (16). %F A067415 a(n)= A067410(n+7, 7). a(n)= 9*16^(n-1), n>=1, a(0)=1. %F A067415 G.f.: (1-7*x)/(1-16*x). %Y A067415 Cf. A067414 (seventh column), A067416 (ninth column), A001025 (powers of 16). %K A067415 nonn,easy %O A067415 0,2 %A A067415 _Wolfdieter Lang_, Jan 25 2002