A023842 - cp's OEIS frontend

A023842 Sum of exponents in prime-power factorization of C(5n,n-5).

n	a(n)
5	0
6	3
7	3
8	6
9	6
10	8
11	8
12	11
13	10
14	12
15	9
16	13
17	13
18	15
19	11
20	17
21	16
22	16
23	15
24	18
25	16
26	22
27	22
28	23
29	22
30	23
31	20
32	22
33	22
34	24
35	22
36	27
37	22
38	25
39	25
40	26
41	24
42	29
43	24
44	29
45	30
46	28
47	27
48	31
49	31
50	33
51	32
52	39
53	35
54	37
55	34
56	39
57	36
58	41
59	38
60	39
61	37
62	37
63	34
64	37
65	39
66	43
67	38
68	41
69	40
70	40
71	39
72	44
73	40
74	42
75	42
76	46
77	47
78	49
79	46
80	46
81	47

[0, 3, 3, 6, 6, 8, 8, 11, 10, 12, 9, 13, 13, 15, 11, 17, 16, 16, 15, 18, 16, 22, 22, 23, 22, 23, 20, 22, 22, 24, 22, 27, 22, 25, 25, 26, 24, 29, 24, 29, 30, 28, 27, 31, 31, 33, 32, 39, 35, 37, 34, 39, 36, 41, 38, 39, 37, 37, 34, 37, 39, 43, 38, 41, 40, 40, 39, 44, 40, 42, 42, 46, 47, 49, 46, 46, 47]

cp's OEIS Frontend

A023842 Sum of exponents in prime-power factorization of C(5n,n-5).

Table of values

List of values

n	a(n)
5	0
6	3
7	3
8	6
9	6
10	8
11	8
12	11
13	10
14	12
15	9
16	13
17	13
18	15
19	11
20	17
21	16
22	16
23	15
24	18
25	16
26	22
27	22
28	23
29	22
30	23
31	20
32	22
33	22
34	24
35	22
36	27
37	22
38	25
39	25
40	26
41	24
42	29
43	24
44	29
45	30
46	28
47	27
48	31
49	31
50	33
51	32
52	39
53	35
54	37
55	34
56	39
57	36
58	41
59	38
60	39
61	37
62	37
63	34
64	37
65	39
66	43
67	38
68	41
69	40
70	40
71	39
72	44
73	40
74	42
75	42
76	46
77	47
78	49
79	46
80	46
81	47

n	a(n)
5	0
6	3
7	3
8	6
9	6
10	8
11	8
12	11
13	10
14	12
15	9
16	13
17	13
18	15
19	11
20	17
21	16
22	16
23	15
24	18
25	16
26	22
27	22
28	23
29	22
30	23
31	20
32	22
33	22
34	24
35	22
36	27
37	22
38	25
39	25
40	26
41	24
42	29
43	24
44	29
45	30
46	28
47	27
48	31
49	31
50	33
51	32
52	39
53	35
54	37
55	34
56	39
57	36
58	41
59	38
60	39
61	37
62	37
63	34
64	37
65	39
66	43
67	38
68	41
69	40
70	40
71	39
72	44
73	40
74	42
75	42
76	46
77	47
78	49
79	46
80	46
81	47

n	a(n)
5	0
6	3
7	3
8	6
9	6
10	8
11	8
12	11
13	10
14	12
15	9
16	13
17	13
18	15
19	11
20	17
21	16
22	16
23	15
24	18
25	16
26	22
27	22
28	23
29	22
30	23
31	20
32	22
33	22
34	24
35	22
36	27
37	22
38	25
39	25
40	26
41	24
42	29
43	24
44	29
45	30
46	28
47	27
48	31
49	31
50	33
51	32
52	39
53	35
54	37
55	34
56	39
57	36
58	41
59	38
60	39
61	37
62	37
63	34
64	37
65	39
66	43
67	38
68	41
69	40
70	40
71	39
72	44
73	40
74	42
75	42
76	46
77	47
78	49
79	46
80	46
81	47