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A121264 See Comments for definition. 5

%I

%S 2,3,5,26,1370,9840770,851566070376026

%N See Comments for definition.

%C We use N_b to denote "N read in base b". Similar to A121263, but now we write the numerals in the stack in binary:

%C ......10....10.....10......10........etc.

%C ..............11.....11......11..........

%C .......................100.....100.......

%C ..................................101....

%C The next two terms have about 144 and 450 digits respectively.

%C A "dungeon" of numbers.

%D David Applegate, Marc LeBrun and N. J. A. Sloane, Descending Dungeons and Iterated Base-Changing, in "The Mathematics of Preference, Choice and Order: Essays in Honor of Peter Fishburn", edited by Steven Brams, William V. Gehrlein and Fred S. Roberts, Springer, 2009, pp. 393-402.

%H David Applegate, Marc LeBrun and N. J. A. Sloane, <a href="https://arxiv.org/abs/math/0611293">Descending Dungeons and Iterated Base-Changing</a>, arXiv:math/0611293 [math.NT], 2006-2007.

%H David Applegate, Marc LeBrun, N. J. A. Sloane, <a href="https://www.jstor.org/stable/40391135">Descending Dungeons, Problem 11286</a>, Amer. Math. Monthly, 116 (2009) 466-467.

%Y Cf. A121263, A121265.

%K nonn,base

%O 1,1

%A _Marc LeBrun_, Aug 23 2006

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Last modified November 30 13:47 EST 2021. Contains 349420 sequences. (Running on oeis4.)