cp's OEIS Frontend

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.

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A121297 For definition see Comments lines.

Original entry on oeis.org

11, 14, 21, 39, 78, 211, 1954, 63163, 17163259, 316235916142, 7475840758734855197, 77068358083998565749275388634420, 56080446471298599543571746837309517827424625680076701163
Offset: 10

Views

Author

N. J. A. Sloane, Aug 25 2006

Keywords

Comments

Using N_b to denote "N read in base b", the sequence is
......11....11.....11.....11.......etc.
..............13.....13.....13.........
.......................17.....17.......
................................19.....
where the subscripts are evaluated from the top downwards.
Analog of A121265 using primes >= 11.

References

  • 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.

Crossrefs

Programs

  • Maple
    asubb := proc(a,b) local t1; t1:=convert(a,base,10); add(t1[j]*b^(j-1),j=1..nops(t1)): end;
    t1:=[10]; for n from 1 to 12 do t2:=f(t1[n],ithprime(n+5)); t1:=[op(t1),t2]; od: t1;
Previous Showing 11-11 of 11 results.