A023838 - cp's OEIS frontend

A023838 Sum of exponents in prime-power factorization of C(5n,n-1).

n	a(n)
1	0
2	2
3	3
4	5
5	5
6	7
7	8
8	9
9	8
10	10
11	10
12	12
13	14
14	13
15	15
16	14
17	14
18	16
19	14
20	17
21	17
22	18
23	18
24	21
25	18
26	22
27	24
28	23
29	23
30	24
31	24
32	24
33	23
34	23
35	24
36	25
37	24
38	26
39	28
40	29
41	25
42	30
43	27
44	29
45	33
46	30
47	30
48	32
49	32
50	33
51	33
52	37
53	37
54	38
55	38
56	37
57	36
58	40
59	39
60	44
61	39
62	41
63	40
64	39
65	37
66	39
67	38
68	39
69	42
70	41
71	44
72	44
73	43
74	43
75	44
76	46
77	48
78	49

[0, 2, 3, 5, 5, 7, 8, 9, 8, 10, 10, 12, 14, 13, 15, 14, 14, 16, 14, 17, 17, 18, 18, 21, 18, 22, 24, 23, 23, 24, 24, 24, 23, 23, 24, 25, 24, 26, 28, 29, 25, 30, 27, 29, 33, 30, 30, 32, 32, 33, 33, 37, 37, 38, 38, 37, 36, 40, 39, 44, 39, 41, 40, 39, 37, 39, 38, 39, 42, 41, 44, 44, 43, 43, 44, 46, 48, 49]

cp's OEIS Frontend

A023838 Sum of exponents in prime-power factorization of C(5n,n-1).

Table of values

List of values

n	a(n)
1	0
2	2
3	3
4	5
5	5
6	7
7	8
8	9
9	8
10	10
11	10
12	12
13	14
14	13
15	15
16	14
17	14
18	16
19	14
20	17
21	17
22	18
23	18
24	21
25	18
26	22
27	24
28	23
29	23
30	24
31	24
32	24
33	23
34	23
35	24
36	25
37	24
38	26
39	28
40	29
41	25
42	30
43	27
44	29
45	33
46	30
47	30
48	32
49	32
50	33
51	33
52	37
53	37
54	38
55	38
56	37
57	36
58	40
59	39
60	44
61	39
62	41
63	40
64	39
65	37
66	39
67	38
68	39
69	42
70	41
71	44
72	44
73	43
74	43
75	44
76	46
77	48
78	49

n	a(n)
1	0
2	2
3	3
4	5
5	5
6	7
7	8
8	9
9	8
10	10
11	10
12	12
13	14
14	13
15	15
16	14
17	14
18	16
19	14
20	17
21	17
22	18
23	18
24	21
25	18
26	22
27	24
28	23
29	23
30	24
31	24
32	24
33	23
34	23
35	24
36	25
37	24
38	26
39	28
40	29
41	25
42	30
43	27
44	29
45	33
46	30
47	30
48	32
49	32
50	33
51	33
52	37
53	37
54	38
55	38
56	37
57	36
58	40
59	39
60	44
61	39
62	41
63	40
64	39
65	37
66	39
67	38
68	39
69	42
70	41
71	44
72	44
73	43
74	43
75	44
76	46
77	48
78	49

n	a(n)
1	0
2	2
3	3
4	5
5	5
6	7
7	8
8	9
9	8
10	10
11	10
12	12
13	14
14	13
15	15
16	14
17	14
18	16
19	14
20	17
21	17
22	18
23	18
24	21
25	18
26	22
27	24
28	23
29	23
30	24
31	24
32	24
33	23
34	23
35	24
36	25
37	24
38	26
39	28
40	29
41	25
42	30
43	27
44	29
45	33
46	30
47	30
48	32
49	32
50	33
51	33
52	37
53	37
54	38
55	38
56	37
57	36
58	40
59	39
60	44
61	39
62	41
63	40
64	39
65	37
66	39
67	38
68	39
69	42
70	41
71	44
72	44
73	43
74	43
75	44
76	46
77	48
78	49