A299400 - cp's OEIS frontend

A299400 a(n) = concatenation of all (i, e_i) with e_i > 0, when n = Product_{i >= 1} prime(i)^e_i.

n	a(n)
1	0
2	11
3	21
4	12
5	31
6	1121
7	41
8	13
9	22
10	1131
11	51
12	1221
13	61
14	1141
15	2131
16	14
17	71
18	1122
19	81
20	1231
21	2141
22	1151
23	91
24	1321
25	32
26	1161
27	23
28	1241
29	101
30	112131
31	111
32	15
33	2151
34	1171
35	3141
36	1222
37	121
38	1181
39	2161
40	1331
41	131
42	112141
43	141
44	1251
45	2231
46	1191
47	151
48	1421
49	42
50	1132
51	2171

[0, 11, 21, 12, 31, 1121, 41, 13, 22, 1131, 51, 1221, 61, 1141, 2131, 14, 71, 1122, 81, 1231, 2141, 1151, 91, 1321, 32, 1161, 23, 1241, 101, 112131, 111, 15, 2151, 1171, 3141, 1222, 121, 1181, 2161, 1331, 131, 112141, 141, 1251, 2231, 1191, 151, 1421, 42, 1132, 2171]

cp's OEIS Frontend

A299400 a(n) = concatenation of all (i, e_i) with e_i > 0, when n = Product_{i >= 1} prime(i)^e_i.

Table of values

List of values