A166024 - cp's OEIS frontend

A166024 Define dsf(n) = A045503(n) = n_1^{n_1}+n_2^{n_2}+n_3^{n_3} + n_m^{n_m}, where {n_1,n_2,n_3,...n_m} is the list of the decimal digits of n. Starting with a(1) = 421845123, a(n+1) = dsf(a(n)).

n	a(n)
1	421845123
2	16780890
3	421845123
4	16780890
5	421845123
6	16780890
7	421845123
8	16780890
9	421845123
10	16780890
11	421845123
12	16780890
13	421845123
14	16780890
15	421845123
16	16780890
17	421845123
18	16780890
19	421845123
20	16780890
21	421845123
22	16780890
23	421845123
24	16780890

[421845123, 16780890, 421845123, 16780890, 421845123, 16780890, 421845123, 16780890, 421845123, 16780890, 421845123, 16780890, 421845123, 16780890, 421845123, 16780890, 421845123, 16780890, 421845123, 16780890, 421845123, 16780890, 421845123, 16780890]

cp's OEIS Frontend

A166024 Define dsf(n) = A045503(n) = n_1^{n_1}+n_2^{n_2}+n_3^{n_3} + n_m^{n_m}, where {n_1,n_2,n_3,...n_m} is the list of the decimal digits of n. Starting with a(1) = 421845123, a(n+1) = dsf(a(n)).

Table of values

List of values