A353727 - OEIS

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.

0, 2, 3, 11, 54, 74, 88, 183, 20334, 30938, 21247, 90575, 3913, 124845, 2643790, 5828721, 2469947, 4005550, 19917707

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OFFSET

0,2

LINKS

EXAMPLE

Table showing initial values of n (column 1) and a(n) (column 3).

The central column shows the corresponding entry of A353715 written in base 2.

The entries in column 2 end in exactly n zeros.

n A353715(a(n)) a(n)

0 1 0

1 110 2

2 1100 3

3 1101000 11

4 11110000 54

5 1111100000 74

6 11101000000 88

7 110110000000 183

8 1111110101100000000 20334

9 10111110101000000000 30938

10 1111111110000000000 21247

11 1001111111100000000000 90575

12 11111000000000000 3913

13 10011111110000000000000 124845

14 111110111110100000000000000 2643790

15 10011111111111000000000000000 5828721

16 111111111110000000000000000 2469947

17 1111111101100000000000000000 4005550

18 1011111111111000000000000000000 19917707

CROSSREFS

KEYWORD

nonn,more

AUTHOR

Walter Trump, May 11 2022

STATUS

approved