A023843 - cp's OEIS frontend

A023843 Sum of exponents in prime-power factorization of C(5n,n+1).

n	a(n)
1	2
2	5
3	4
4	7
5	7
6	10
7	8
8	11
9	9
10	12
11	12
12	15
13	15
14	15
15	14
16	17
17	15
18	18
19	15
20	21
21	19
22	20
23	18
24	22
25	19
26	24
27	24
28	25
29	25
30	27
31	24
32	26
33	25
34	24
35	24
36	28
37	25
38	29
39	27
40	32
41	27
42	33
43	27
44	30
45	34
46	33
47	31
48	33
49	32
50	35
51	34
52	40
53	37
54	40
55	38
56	41
57	37
58	42
59	39
60	46
61	42
62	42
63	38
64	40
65	39
66	42
67	38
68	42
69	42
70	43
71	44
72	47
73	44
74	46
75	45
76	48
77	49

[2, 5, 4, 7, 7, 10, 8, 11, 9, 12, 12, 15, 15, 15, 14, 17, 15, 18, 15, 21, 19, 20, 18, 22, 19, 24, 24, 25, 25, 27, 24, 26, 25, 24, 24, 28, 25, 29, 27, 32, 27, 33, 27, 30, 34, 33, 31, 33, 32, 35, 34, 40, 37, 40, 38, 41, 37, 42, 39, 46, 42, 42, 38, 40, 39, 42, 38, 42, 42, 43, 44, 47, 44, 46, 45, 48, 49]

cp's OEIS Frontend

A023843 Sum of exponents in prime-power factorization of C(5n,n+1).

Table of values

List of values

n	a(n)
1	2
2	5
3	4
4	7
5	7
6	10
7	8
8	11
9	9
10	12
11	12
12	15
13	15
14	15
15	14
16	17
17	15
18	18
19	15
20	21
21	19
22	20
23	18
24	22
25	19
26	24
27	24
28	25
29	25
30	27
31	24
32	26
33	25
34	24
35	24
36	28
37	25
38	29
39	27
40	32
41	27
42	33
43	27
44	30
45	34
46	33
47	31
48	33
49	32
50	35
51	34
52	40
53	37
54	40
55	38
56	41
57	37
58	42
59	39
60	46
61	42
62	42
63	38
64	40
65	39
66	42
67	38
68	42
69	42
70	43
71	44
72	47
73	44
74	46
75	45
76	48
77	49

n	a(n)
1	2
2	5
3	4
4	7
5	7
6	10
7	8
8	11
9	9
10	12
11	12
12	15
13	15
14	15
15	14
16	17
17	15
18	18
19	15
20	21
21	19
22	20
23	18
24	22
25	19
26	24
27	24
28	25
29	25
30	27
31	24
32	26
33	25
34	24
35	24
36	28
37	25
38	29
39	27
40	32
41	27
42	33
43	27
44	30
45	34
46	33
47	31
48	33
49	32
50	35
51	34
52	40
53	37
54	40
55	38
56	41
57	37
58	42
59	39
60	46
61	42
62	42
63	38
64	40
65	39
66	42
67	38
68	42
69	42
70	43
71	44
72	47
73	44
74	46
75	45
76	48
77	49

n	a(n)
1	2
2	5
3	4
4	7
5	7
6	10
7	8
8	11
9	9
10	12
11	12
12	15
13	15
14	15
15	14
16	17
17	15
18	18
19	15
20	21
21	19
22	20
23	18
24	22
25	19
26	24
27	24
28	25
29	25
30	27
31	24
32	26
33	25
34	24
35	24
36	28
37	25
38	29
39	27
40	32
41	27
42	33
43	27
44	30
45	34
46	33
47	31
48	33
49	32
50	35
51	34
52	40
53	37
54	40
55	38
56	41
57	37
58	42
59	39
60	46
61	42
62	42
63	38
64	40
65	39
66	42
67	38
68	42
69	42
70	43
71	44
72	47
73	44
74	46
75	45
76	48
77	49