A363913 - cp's OEIS frontend

A363913 a(n) = Sum_{k=0..n} divides(k, n) * 3^k, where divides(k, n) = 1 if k divides n, otherwise 0.

n	a(n)
0	1
1	3
2	12
3	30
4	93
5	246
6	768
7	2190
8	6654
9	19713
10	59304
11	177150
12	532290
13	1594326
14	4785168
15	14349180
16	43053375
17	129140166
18	387440940
19	1162261470
20	3486843786
21	10460355420
22	31381236768
23	94143178830
24	282430075332
25	847288609689
26	2541867422664
27	7625597504700
28	22876797240210

[1, 3, 12, 30, 93, 246, 768, 2190, 6654, 19713, 59304, 177150, 532290, 1594326, 4785168, 14349180, 43053375, 129140166, 387440940, 1162261470, 3486843786, 10460355420, 31381236768, 94143178830, 282430075332, 847288609689, 2541867422664, 7625597504700, 22876797240210]

cp's OEIS Frontend

A363913 a(n) = Sum_{k=0..n} divides(k, n) * 3^k, where divides(k, n) = 1 if k divides n, otherwise 0.

Table of values

List of values