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.

A353727 Index in A353715 of the first term divisible by 2^n and no higher power of 2, or -1 if no such term exists.

This page as a plain text file.
%I A353727 #13 May 13 2022 07:58:52
%S A353727 0,2,3,11,54,74,88,183,20334,30938,21247,90575,3913,124845,2643790,
%T A353727 5828721,2469947,4005550,19917707
%N A353727 Index in A353715 of the first term divisible by 2^n and no higher power of 2, or -1 if no such term exists.
%e A353727 Table showing initial values of n (column 1) and a(n) (column 3).
%e A353727 The central column shows the corresponding entry of A353715 written in base 2.
%e A353727 The entries in column 2 end in exactly n zeros.
%e A353727    n                    A353715(a(n))       a(n)
%e A353727    0                                1         0
%e A353727    1                              110         2
%e A353727    2                             1100         3
%e A353727    3                          1101000        11
%e A353727    4                         11110000        54
%e A353727    5                       1111100000        74
%e A353727    6                      11101000000        88
%e A353727    7                     110110000000       183
%e A353727    8              1111110101100000000     20334
%e A353727    9             10111110101000000000     30938
%e A353727   10              1111111110000000000     21247
%e A353727   11           1001111111100000000000     90575
%e A353727   12                11111000000000000      3913
%e A353727   13          10011111110000000000000    124845
%e A353727   14      111110111110100000000000000   2643790
%e A353727   15    10011111111111000000000000000   5828721
%e A353727   16      111111111110000000000000000   2469947
%e A353727   17     1111111101100000000000000000   4005550
%e A353727   18  1011111111111000000000000000000  19917707
%Y A353727 Cf. A353709, A353715, A353724, A353725, A353726.
%K A353727 nonn,more
%O A353727 0,2
%A A353727 _Walter Trump_, May 11 2022