A372337 - cp's OEIS frontend

A372337 Rectangular array, read by descending antidiagonals: row n shows the numbers m > 1 in whose prime factorization p(1)^e(1) * p(2)^e(2) * ... * p(k)^e(k), all e(i) are <= 2 and the number of 0's in the multiset {e(i)} is n-1.

n	a(n)
1	2
2	4
3	3
4	6
5	9
6	5
7	12
8	10
9	14
10	7
11	18
12	15
13	21
14	22
15	11
16	30
17	20
18	25
19	33
20	26
21	13
22	36
23	42
24	28
25	44
26	39
27	34
28	17
29	60
30	45
31	35
32	49
33	52
34	51
35	38
36	19
37	90
38	50
39	63
40	55
41	65
42	68
43	57
44	46
45	23
46	150
47	70
48	66
49	77
50	91
51	85
52	76
53	69
54	58
55	29
56	180
57	75
58	98
59	78
60	102
61	114
62	95
63	92
64	87
65	62

[2, 4, 3, 6, 9, 5, 12, 10, 14, 7, 18, 15, 21, 22, 11, 30, 20, 25, 33, 26, 13, 36, 42, 28, 44, 39, 34, 17, 60, 45, 35, 49, 52, 51, 38, 19, 90, 50, 63, 55, 65, 68, 57, 46, 23, 150, 70, 66, 77, 91, 85, 76, 69, 58, 29, 180, 75, 98, 78, 102, 114, 95, 92, 87, 62]

cp's OEIS Frontend

A372337 Rectangular array, read by descending antidiagonals: row n shows the numbers m > 1 in whose prime factorization p(1)^e(1) * p(2)^e(2) * ... * p(k)^e(k), all e(i) are <= 2 and the number of 0's in the multiset {e(i)} is n-1.

Table of values

List of values

n	a(n)
1	2
2	4
3	3
4	6
5	9
6	5
7	12
8	10
9	14
10	7
11	18
12	15
13	21
14	22
15	11
16	30
17	20
18	25
19	33
20	26
21	13
22	36
23	42
24	28
25	44
26	39
27	34
28	17
29	60
30	45
31	35
32	49
33	52
34	51
35	38
36	19
37	90
38	50
39	63
40	55
41	65
42	68
43	57
44	46
45	23
46	150
47	70
48	66
49	77
50	91
51	85
52	76
53	69
54	58
55	29
56	180
57	75
58	98
59	78
60	102
61	114
62	95
63	92
64	87
65	62

n	a(n)
1	2
2	4
3	3
4	6
5	9
6	5
7	12
8	10
9	14
10	7
11	18
12	15
13	21
14	22
15	11
16	30
17	20
18	25
19	33
20	26
21	13
22	36
23	42
24	28
25	44
26	39
27	34
28	17
29	60
30	45
31	35
32	49
33	52
34	51
35	38
36	19
37	90
38	50
39	63
40	55
41	65
42	68
43	57
44	46
45	23
46	150
47	70
48	66
49	77
50	91
51	85
52	76
53	69
54	58
55	29
56	180
57	75
58	98
59	78
60	102
61	114
62	95
63	92
64	87
65	62

n	a(n)
1	2
2	4
3	3
4	6
5	9
6	5
7	12
8	10
9	14
10	7
11	18
12	15
13	21
14	22
15	11
16	30
17	20
18	25
19	33
20	26
21	13
22	36
23	42
24	28
25	44
26	39
27	34
28	17
29	60
30	45
31	35
32	49
33	52
34	51
35	38
36	19
37	90
38	50
39	63
40	55
41	65
42	68
43	57
44	46
45	23
46	150
47	70
48	66
49	77
50	91
51	85
52	76
53	69
54	58
55	29
56	180
57	75
58	98
59	78
60	102
61	114
62	95
63	92
64	87
65	62