A074784 - cp's OEIS frontend

A074784 a(n) = a(n-1) + square of the sum of digits of n.

n	a(n)
0	0
1	1
2	5
3	14
4	30
5	55
6	91
7	140
8	204
9	285
10	286
11	290
12	299
13	315
14	340
15	376
16	425
17	489
18	570
19	670
20	674
21	683
22	699
23	724
24	760
25	809
26	873
27	954
28	1054
29	1175
30	1184
31	1200
32	1225
33	1261
34	1310
35	1374
36	1455
37	1555
38	1676
39	1820
40	1836
41	1861
42	1897
43	1946
44	2010
45	2091
46	2191
47	2312
48	2456

[0, 1, 5, 14, 30, 55, 91, 140, 204, 285, 286, 290, 299, 315, 340, 376, 425, 489, 570, 670, 674, 683, 699, 724, 760, 809, 873, 954, 1054, 1175, 1184, 1200, 1225, 1261, 1310, 1374, 1455, 1555, 1676, 1820, 1836, 1861, 1897, 1946, 2010, 2091, 2191, 2312, 2456]

cp's OEIS Frontend

A074784 a(n) = a(n-1) + square of the sum of digits of n.

Table of values

List of values