A023854 - cp's OEIS frontend

A023854 Sum of exponents in prime-power factorization of binomial(6n, 3n).

n	a(n)
0	0
1	3
2	5
3	6
4	7
5	11
6	11
7	12
8	13
9	14
10	15
11	16
12	15
13	19
14	20
15	21
16	22
17	23
18	23
19	22
20	25
21	29
22	25
23	29
24	28
25	31
26	32
27	30
28	31
29	34
30	34
31	35
32	35
33	36
34	36
35	38
36	38
37	41
38	41
39	41
40	40
41	46
42	44
43	43
44	44
45	44
46	46
47	47
48	46
49	47
50	50
51	51
52	49
53	53
54	49
55	52
56	53
57	53
58	56
59	55
60	56
61	60
62	60
63	61
64	57
65	61
66	61
67	61
68	65
69	66
70	63
71	67
72	66
73	69
74	69
75	66
76	69
77	71
78	70
79	72
80	72

[0, 3, 5, 6, 7, 11, 11, 12, 13, 14, 15, 16, 15, 19, 20, 21, 22, 23, 23, 22, 25, 29, 25, 29, 28, 31, 32, 30, 31, 34, 34, 35, 35, 36, 36, 38, 38, 41, 41, 41, 40, 46, 44, 43, 44, 44, 46, 47, 46, 47, 50, 51, 49, 53, 49, 52, 53, 53, 56, 55, 56, 60, 60, 61, 57, 61, 61, 61, 65, 66, 63, 67, 66, 69, 69, 66, 69, 71, 70, 72, 72]

cp's OEIS Frontend

A023854 Sum of exponents in prime-power factorization of binomial(6n, 3n).

Table of values

List of values

n	a(n)
0	0
1	3
2	5
3	6
4	7
5	11
6	11
7	12
8	13
9	14
10	15
11	16
12	15
13	19
14	20
15	21
16	22
17	23
18	23
19	22
20	25
21	29
22	25
23	29
24	28
25	31
26	32
27	30
28	31
29	34
30	34
31	35
32	35
33	36
34	36
35	38
36	38
37	41
38	41
39	41
40	40
41	46
42	44
43	43
44	44
45	44
46	46
47	47
48	46
49	47
50	50
51	51
52	49
53	53
54	49
55	52
56	53
57	53
58	56
59	55
60	56
61	60
62	60
63	61
64	57
65	61
66	61
67	61
68	65
69	66
70	63
71	67
72	66
73	69
74	69
75	66
76	69
77	71
78	70
79	72
80	72

n	a(n)
0	0
1	3
2	5
3	6
4	7
5	11
6	11
7	12
8	13
9	14
10	15
11	16
12	15
13	19
14	20
15	21
16	22
17	23
18	23
19	22
20	25
21	29
22	25
23	29
24	28
25	31
26	32
27	30
28	31
29	34
30	34
31	35
32	35
33	36
34	36
35	38
36	38
37	41
38	41
39	41
40	40
41	46
42	44
43	43
44	44
45	44
46	46
47	47
48	46
49	47
50	50
51	51
52	49
53	53
54	49
55	52
56	53
57	53
58	56
59	55
60	56
61	60
62	60
63	61
64	57
65	61
66	61
67	61
68	65
69	66
70	63
71	67
72	66
73	69
74	69
75	66
76	69
77	71
78	70
79	72
80	72

n	a(n)
0	0
1	3
2	5
3	6
4	7
5	11
6	11
7	12
8	13
9	14
10	15
11	16
12	15
13	19
14	20
15	21
16	22
17	23
18	23
19	22
20	25
21	29
22	25
23	29
24	28
25	31
26	32
27	30
28	31
29	34
30	34
31	35
32	35
33	36
34	36
35	38
36	38
37	41
38	41
39	41
40	40
41	46
42	44
43	43
44	44
45	44
46	46
47	47
48	46
49	47
50	50
51	51
52	49
53	53
54	49
55	52
56	53
57	53
58	56
59	55
60	56
61	60
62	60
63	61
64	57
65	61
66	61
67	61
68	65
69	66
70	63
71	67
72	66
73	69
74	69
75	66
76	69
77	71
78	70
79	72
80	72