A023980 - cp's OEIS frontend

A023980 Sum of exponents in prime-power factorization of multinomial coefficient M(4n;2n,n,n).

n	a(n)
0	0
1	3
2	5
3	8
4	9
5	11
6	12
7	17
8	15
9	17
10	18
11	20
12	20
13	24
14	25
15	26
16	24
17	27
18	26
19	30
20	29
21	32
22	34
23	37
24	35
25	37
26	37
27	37
28	36
29	39
30	40
31	44
32	40
33	41
34	45
35	45
36	43
37	48
38	48
39	51
40	48
41	51
42	51
43	56
44	56
45	55
46	56
47	60
48	57
49	59
50	57
51	59
52	60
53	63
54	61
55	63
56	60
57	63
58	65
59	68
60	65
61	71
62	74
63	73
64	68
65	69
66	69
67	73
68	71
69	75
70	75
71	77
72	74
73	78
74	79
75	81
76	81

[0, 3, 5, 8, 9, 11, 12, 17, 15, 17, 18, 20, 20, 24, 25, 26, 24, 27, 26, 30, 29, 32, 34, 37, 35, 37, 37, 37, 36, 39, 40, 44, 40, 41, 45, 45, 43, 48, 48, 51, 48, 51, 51, 56, 56, 55, 56, 60, 57, 59, 57, 59, 60, 63, 61, 63, 60, 63, 65, 68, 65, 71, 74, 73, 68, 69, 69, 73, 71, 75, 75, 77, 74, 78, 79, 81, 81]

cp's OEIS Frontend

A023980 Sum of exponents in prime-power factorization of multinomial coefficient M(4n;2n,n,n).

Table of values

List of values

n	a(n)
0	0
1	3
2	5
3	8
4	9
5	11
6	12
7	17
8	15
9	17
10	18
11	20
12	20
13	24
14	25
15	26
16	24
17	27
18	26
19	30
20	29
21	32
22	34
23	37
24	35
25	37
26	37
27	37
28	36
29	39
30	40
31	44
32	40
33	41
34	45
35	45
36	43
37	48
38	48
39	51
40	48
41	51
42	51
43	56
44	56
45	55
46	56
47	60
48	57
49	59
50	57
51	59
52	60
53	63
54	61
55	63
56	60
57	63
58	65
59	68
60	65
61	71
62	74
63	73
64	68
65	69
66	69
67	73
68	71
69	75
70	75
71	77
72	74
73	78
74	79
75	81
76	81

n	a(n)
0	0
1	3
2	5
3	8
4	9
5	11
6	12
7	17
8	15
9	17
10	18
11	20
12	20
13	24
14	25
15	26
16	24
17	27
18	26
19	30
20	29
21	32
22	34
23	37
24	35
25	37
26	37
27	37
28	36
29	39
30	40
31	44
32	40
33	41
34	45
35	45
36	43
37	48
38	48
39	51
40	48
41	51
42	51
43	56
44	56
45	55
46	56
47	60
48	57
49	59
50	57
51	59
52	60
53	63
54	61
55	63
56	60
57	63
58	65
59	68
60	65
61	71
62	74
63	73
64	68
65	69
66	69
67	73
68	71
69	75
70	75
71	77
72	74
73	78
74	79
75	81
76	81

n	a(n)
0	0
1	3
2	5
3	8
4	9
5	11
6	12
7	17
8	15
9	17
10	18
11	20
12	20
13	24
14	25
15	26
16	24
17	27
18	26
19	30
20	29
21	32
22	34
23	37
24	35
25	37
26	37
27	37
28	36
29	39
30	40
31	44
32	40
33	41
34	45
35	45
36	43
37	48
38	48
39	51
40	48
41	51
42	51
43	56
44	56
45	55
46	56
47	60
48	57
49	59
50	57
51	59
52	60
53	63
54	61
55	63
56	60
57	63
58	65
59	68
60	65
61	71
62	74
63	73
64	68
65	69
66	69
67	73
68	71
69	75
70	75
71	77
72	74
73	78
74	79
75	81
76	81