A360365 - cp's OEIS frontend

A360365 a(n) = sum of the products of the digits of the first n positive multiples of 3.

n	a(n)
1	3
2	9
3	18
4	20
5	25
6	33
7	35
8	43
9	57
10	57
11	66
12	84
13	111
14	119
15	139
16	171
17	176
18	196
19	231
20	231
21	249
22	285
23	339
24	353
25	388
26	444
27	452
28	484
29	540
30	540
31	567
32	621
33	702
34	702
35	702
36	702
37	703
38	707
39	714
40	714
41	720
42	732
43	750
44	756
45	771
46	795
47	799
48	815
49	843
50	843
51	858
52	888
53	933
54	945
55	975
56	1023
57	1030
58	1058
59	1107

[3, 9, 18, 20, 25, 33, 35, 43, 57, 57, 66, 84, 111, 119, 139, 171, 176, 196, 231, 231, 249, 285, 339, 353, 388, 444, 452, 484, 540, 540, 567, 621, 702, 702, 702, 702, 703, 707, 714, 714, 720, 732, 750, 756, 771, 795, 799, 815, 843, 843, 858, 888, 933, 945, 975, 1023, 1030, 1058, 1107]

cp's OEIS Frontend

A360365 a(n) = sum of the products of the digits of the first n positive multiples of 3.

Table of values

List of values