A067923 - OEIS

%I #11 Nov 22 2020 17:49:05

%S 1,1,1,8,12,135,199,378,600,1836,4897,8198,8993,84887,450287,892157,

%T 5053447,5183243,15350505,19963471,31631271,37655416,2138752269,

%U 4805947342,14508700588,27508373127,28635924075,30814114095,32073629885,961160400603,3607716972786

%N Engel expansion of log(23).

%o (PARI) \\ a(1)=1 and for n>1:

%o s=log(23); for(i=1,30,s=s*ceil(1/s)-1; print1(ceil(1/s),","); );

%Y See A006784 for explanation of Engel expansions. Log(23) is the first number of the form Log(n), n an integer, for which it is not known whether a BBP formula exists.

%Y Cf. A016646.

%K easy,nonn

%O 1,4

%A _Benoit Cloitre_, Mar 03 2002