A202349 - cp's OEIS frontend

A202349 Lexicographically earliest sequence such that the sequence and its first and second differences share no terms, and the 3rd differences are equal to the original sequence.

n	a(n)
1	1
2	3
3	9
4	20
5	39
6	75
7	148
8	297
9	597
10	1196
11	2391
12	4779
13	9556
14	19113
15	38229
16	76460
17	152919
18	305835
19	611668
20	1223337
21	2446677
22	4893356
23	9786711
24	19573419
25	39146836
26	78293673
27	156587349
28	313174700
29	626349399
30	1252698795
31	2505397588
32	5010795177
33	10021590357

[1, 3, 9, 20, 39, 75, 148, 297, 597, 1196, 2391, 4779, 9556, 19113, 38229, 76460, 152919, 305835, 611668, 1223337, 2446677, 4893356, 9786711, 19573419, 39146836, 78293673, 156587349, 313174700, 626349399, 1252698795, 2505397588, 5010795177, 10021590357]

cp's OEIS Frontend

A202349 Lexicographically earliest sequence such that the sequence and its first and second differences share no terms, and the 3rd differences are equal to the original sequence.

Table of values

List of values