A383046 - cp's OEIS frontend

A383046 Smallest initial value for shortcut form of the Collatz function (3x+1)/2 sequence that begins with exactly n-1 increases and decreases once before the last increment.

n	a(n)
3	11
4	7
5	175
6	287
7	2239
8	4223
9	19199
10	12799
11	52223
12	559103
13	372735
14	5840895
15	9486335
16	6324223
17	48955391
18	32636927
19	1095499775
20	730333183
21	11940134911
22	19413336063
23	35848716287
24	298777051135
25	932192452607
26	621461635071
27	6278369771519
28	4185579847679

[11, 7, 175, 287, 2239, 4223, 19199, 12799, 52223, 559103, 372735, 5840895, 9486335, 6324223, 48955391, 32636927, 1095499775, 730333183, 11940134911, 19413336063, 35848716287, 298777051135, 932192452607, 621461635071, 6278369771519, 4185579847679]

cp's OEIS Frontend

A383046 Smallest initial value for shortcut form of the Collatz function (3x+1)/2 sequence that begins with exactly n-1 increases and decreases once before the last increment.

Table of values

List of values