A023978 - cp's OEIS frontend

A023978 Sum of exponents in prime-power factorization of multinomial coefficient M(3n; n,n,n).

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

[0, 2, 4, 7, 7, 9, 11, 14, 12, 13, 14, 19, 18, 20, 22, 23, 19, 23, 22, 27, 25, 25, 30, 33, 30, 30, 32, 33, 31, 34, 34, 38, 33, 34, 36, 38, 34, 37, 40, 42, 39, 42, 43, 50, 49, 48, 50, 54, 49, 50, 49, 51, 51, 53, 54, 55, 51, 53, 54, 61, 57, 60, 63, 63, 56, 56, 56, 61, 60, 61, 63, 66, 61, 64, 67, 69, 67, 68]

cp's OEIS Frontend

A023978 Sum of exponents in prime-power factorization of multinomial coefficient M(3n; n,n,n).

Table of values

List of values

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

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

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