A112668 - cp's OEIS frontend

A112668 Triangle read by rows: row n gives an n-term geometric progression with first term 1 such that the sum of the n terms is a multiple of n.

n	a(n)
1	1
2	1
3	3
4	1
5	4
6	16
7	1
8	3
9	9
10	27
11	1
12	6
13	36
14	216
15	1296
16	1
17	5
18	25
19	125
20	625
21	3125
22	1
23	8
24	64
25	512
26	4096
27	32768
28	262144
29	1
30	3
31	9
32	27
33	81
34	243
35	729
36	2187
37	1
38	4
39	16
40	64
41	256
42	1024
43	4096
44	16384
45	65536
46	1
47	9
48	81
49	729
50	6561
51	59049
52	531441
53	4782969
54	43046721
55	387420489
56	1

[1, 1, 3, 1, 4, 16, 1, 3, 9, 27, 1, 6, 36, 216, 1296, 1, 5, 25, 125, 625, 3125, 1, 8, 64, 512, 4096, 32768, 262144, 1, 3, 9, 27, 81, 243, 729, 2187, 1, 4, 16, 64, 256, 1024, 4096, 16384, 65536, 1, 9, 81, 729, 6561, 59049, 531441, 4782969, 43046721, 387420489, 1]

cp's OEIS Frontend

A112668 Triangle read by rows: row n gives an n-term geometric progression with first term 1 such that the sum of the n terms is a multiple of n.

Table of values

List of values