A300286 - cp's OEIS frontend

A300286 Define a set of generalized Syracuse sequences starting with x(1)=2n+1 a positive odd integer, if x(i) is odd prime set x(i+1)=67x(i)+1, if x(i) is odd not prime set x(i+1)=3*x(i)+1 and if x(i) is even then set x(i+1)=x(i)/2. Then a(n) is the first index i > 1 at which x(i) reaches 1.

n	a(n)
0	4
1	209166
2	13
3	207226
4	207229
5	384614
6	384602
7	32
8	104820
9	403030
10	8
11	30
12	403033
13	118516
14	39365
15	403070
16	403036
17	118323
18	11641
19	118425
20	118514
21	89369
22	104824
23	180241
24	11644
25	39371
26	118321
27	118294
28	89372
29	118423
30	119595
31	39372
32	11647
33	403093
34	384607
35	47436
36	124886

[4, 209166, 13, 207226, 207229, 384614, 384602, 32, 104820, 403030, 8, 30, 403033, 118516, 39365, 403070, 403036, 118323, 11641, 118425, 118514, 89369, 104824, 180241, 11644, 39371, 118321, 118294, 89372, 118423, 119595, 39372, 11647, 403093, 384607, 47436, 124886]

cp's OEIS Frontend

A300286 Define a set of generalized Syracuse sequences starting with x(1)=2n+1 a positive odd integer, if x(i) is odd prime set x(i+1)=67x(i)+1, if x(i) is odd not prime set x(i+1)=3*x(i)+1 and if x(i) is even then set x(i+1)=x(i)/2. Then a(n) is the first index i > 1 at which x(i) reaches 1.

Table of values

List of values

cp's OEIS Frontend

A300286 Define a set of generalized Syracuse sequences starting with x(1)=2*n+1 a positive odd integer, if x(i) is odd prime set x(i+1)=67*x(i)+1, if x(i) is odd not prime set x(i+1)=3*x(i)+1 and if x(i) is even then set x(i+1)=x(i)/2. Then a(n) is the first index i > 1 at which x(i) reaches 1.

Table of values

List of values

A300286 Define a set of generalized Syracuse sequences starting with x(1)=2n+1 a positive odd integer, if x(i) is odd prime set x(i+1)=67x(i)+1, if x(i) is odd not prime set x(i+1)=3*x(i)+1 and if x(i) is even then set x(i+1)=x(i)/2. Then a(n) is the first index i > 1 at which x(i) reaches 1.