Sequence builder 3n-1 from odd to odd
Current n: 17 (dec) 10001 (bin) mod 8 = 1
Action
Select
New odd number (dec)
New odd number (bin)
New odd number mod 8
Movement
n * 4 - 1
67 (Alias for 17)
1000011
3
Up
n - (n-1)/3
(not possible)
Down
n + (n+1)/3
23
10111
7
Up
Submit
back
1
5
17
Sequence: UDUDUDUDDUDUDUDDDDU17
Parity sequence: UUUUDUUUDDDU17
Sequence executed:
Iteration
Decimal
Binary
n mod 8
n mod 4
1.
17
10001
1
1 - Up
2.
50
110010
2
2 - Down
3.
25
11001
1
1 - Up
4.
74
1001010
2
2 - Down
5.
37
100101
5
1 - Up
6.
110
1101110
6
2 - Down
7.
55
110111
7
3 - Up
8.
164
10100100
4
0 - Down
9.
82
1010010
2
2 - Down
10.
41
101001
1
1 - Up
11.
122
1111010
2
2 - Down
12.
61
111101
5
1 - Up
13.
182
10110110
6
2 - Down
14.
91
1011011
3
3 - Up
15.
272
100010000
0
0 - Down
16.
136
10001000
0
0 - Down
17.
68
1000100
4
0 - Down
18.
34
100010
2
2 - Down
19.
17
10001
1
1 - Up