A290308 - cp's OEIS frontend

A290308 Decimal encoding of the prime factorization of n: for n > 0 with prime factorization Product_{i=1..k} prime(i)^e_i, let E_n = (e_k, ..., e_1), replace each nonzero e_i with A052382(e_i) and each zero e_i with "" in E_n to obtain F_n, concatenate the elements of F_n with a "0" inserted after every element except for the last, and interpret in decimal base.

n	a(n)
1	0
2	1
3	10
4	2
5	100
6	101
7	1000
8	3
9	20
10	1001
11	10000
12	102
13	100000
14	10001
15	1010
16	4
17	1000000
18	201
19	10000000
20	1002
21	10010
22	100001
23	100000000
24	103
25	200
26	1000001
27	30
28	10002
29	1000000000
30	10101
31	10000000000
32	5
33	100010
34	10000001
35	10100
36	202
37	100000000000
38	100000001

[0, 1, 10, 2, 100, 101, 1000, 3, 20, 1001, 10000, 102, 100000, 10001, 1010, 4, 1000000, 201, 10000000, 1002, 10010, 100001, 100000000, 103, 200, 1000001, 30, 10002, 1000000000, 10101, 10000000000, 5, 100010, 10000001, 10100, 202, 100000000000, 100000001]

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