A126783 - cp's OEIS frontend

A126783 Smallest k > 1 such that (sum of digits of k^n)*(sum of digits of k^(n+1)) = k, or 0 if no such k exists.

n	a(n)
1	80
2	80
3	70
4	3905
5	4004
6	700
7	19278
8	32761
9	5600
10	8100
11	24940
12	10600
13	56330
14	68040
15	81760
16	149705
17	116180
18	126360
19	123580
20	0
21	65500
22	311003
23	205030
24	114400
25	454951
26	317350
27	312170
28	296270
29	359380
30	332750
31	699785
32	723338
33	498150
34	499130
35	901368

[80, 80, 70, 3905, 4004, 700, 19278, 32761, 5600, 8100, 24940, 10600, 56330, 68040, 81760, 149705, 116180, 126360, 123580, 0, 65500, 311003, 205030, 114400, 454951, 317350, 312170, 296270, 359380, 332750, 699785, 723338, 498150, 499130, 901368]

cp's OEIS Frontend

A126783 Smallest k > 1 such that (sum of digits of k^n)*(sum of digits of k^(n+1)) = k, or 0 if no such k exists.

Table of values

List of values