A279237 - cp's OEIS frontend

A279237 Let k_i be the multiplicity of prime(i) in the prime factorization of the n-th composite number C_n, and let k_i=0 if prime(i) is not a factor of C_n. Then a(n)=1k_1+10k_2+100k_3+...+10^Nk_N, where N is the index of the largest prime factor in C_n.

n	a(n)
1	2
2	11
3	3
4	20
5	101
6	12
7	1001
8	110
9	4
10	21
11	102
12	1010
13	10001
14	13
15	200
16	100001
17	30
18	1002
19	111
20	5
21	10010
22	1000001
23	1100
24	22
25	10000001
26	100010
27	103
28	1011
29	10002
30	120
31	100000001
32	14
33	2000
34	201
35	1000010
36	100002
37	31
38	10100
39	1003
40	10000010
41	1000000001
42	112
43	10000000001
44	1020
45	6
46	100100
47	10011
48	1000002

[2, 11, 3, 20, 101, 12, 1001, 110, 4, 21, 102, 1010, 10001, 13, 200, 100001, 30, 1002, 111, 5, 10010, 1000001, 1100, 22, 10000001, 100010, 103, 1011, 10002, 120, 100000001, 14, 2000, 201, 1000010, 100002, 31, 10100, 1003, 10000010, 1000000001, 112, 10000000001, 1020, 6, 100100, 10011, 1000002]

cp's OEIS Frontend

A279237 Let k_i be the multiplicity of prime(i) in the prime factorization of the n-th composite number C_n, and let k_i=0 if prime(i) is not a factor of C_n. Then a(n)=1k_1+10k_2+100k_3+...+10^Nk_N, where N is the index of the largest prime factor in C_n.

Table of values

List of values

cp's OEIS Frontend

A279237 Let k_i be the multiplicity of prime(i) in the prime factorization of the n-th composite number C_n, and let k_i=0 if prime(i) is not a factor of C_n. Then a(n)=1*k_1+10*k_2+100*k_3+...+10^N*k_N, where N is the index of the largest prime factor in C_n.

Table of values

List of values

A279237 Let k_i be the multiplicity of prime(i) in the prime factorization of the n-th composite number C_n, and let k_i=0 if prime(i) is not a factor of C_n. Then a(n)=1k_1+10k_2+100k_3+...+10^Nk_N, where N is the index of the largest prime factor in C_n.