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 A080230 #11 Sep 15 2024 15:21:29
%S A080230 2,4,30,63,162,629,3918,5345,8577,10902,12073,19001,28961,33387,65964,
%T A080230 345951,1876681,2212505,9373113,11011867,12921837,14245984,63809171,
%U A080230 96843656,111393114,340427213,536556183,768096412,1510946116,3988447796
%N A080230 Engel expansion for (positive) constant defined in A078756.
%F A080230 See A006784 for definition of Engel expansion.
%o A080230 (PARI) { my(x=vector(31), a=vector(#x-1)); x[1]=0.62923321313860758778445822033246963679442280615921;
%o A080230 for (i=1,#a,a[i]=ceil(1/x[i]); x[i+1]=x[i]*a[i]-1); a }
%Y A080230 Cf. A006784, A078756, A080321.
%K A080230 nonn
%O A080230 1,1
%A A080230 _Jon Perry_, Feb 08 2003