A144680 - cp's OEIS frontend

A144680 Triangle read by rows, lower half of an array formed by A004736 * A144328 (transform).

n	a(n)
1	1
2	2
3	3
4	3
5	5
6	7
7	4
8	7
9	11
10	14
11	5
12	9
13	15
14	21
15	25
16	6
17	11
18	19
19	28
20	36
21	41
22	7
23	13
24	23
25	35
26	47
27	57
28	63
29	8
30	15
31	27
32	42
33	58
34	73
35	85
36	92
37	9
38	17
39	31
40	49
41	69
42	89
43	107
44	121
45	129
46	10
47	19
48	35
49	56
50	80
51	105
52	129
53	150
54	166
55	175

[1, 2, 3, 3, 5, 7, 4, 7, 11, 14, 5, 9, 15, 21, 25, 6, 11, 19, 28, 36, 41, 7, 13, 23, 35, 47, 57, 63, 8, 15, 27, 42, 58, 73, 85, 92, 9, 17, 31, 49, 69, 89, 107, 121, 129, 10, 19, 35, 56, 80, 105, 129, 150, 166, 175]

cp's OEIS Frontend

A144680 Triangle read by rows, lower half of an array formed by A004736 * A144328 (transform).

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	3
5	5
6	7
7	4
8	7
9	11
10	14
11	5
12	9
13	15
14	21
15	25
16	6
17	11
18	19
19	28
20	36
21	41
22	7
23	13
24	23
25	35
26	47
27	57
28	63
29	8
30	15
31	27
32	42
33	58
34	73
35	85
36	92
37	9
38	17
39	31
40	49
41	69
42	89
43	107
44	121
45	129
46	10
47	19
48	35
49	56
50	80
51	105
52	129
53	150
54	166
55	175

n	a(n)
1	1
2	2
3	3
4	3
5	5
6	7
7	4
8	7
9	11
10	14
11	5
12	9
13	15
14	21
15	25
16	6
17	11
18	19
19	28
20	36
21	41
22	7
23	13
24	23
25	35
26	47
27	57
28	63
29	8
30	15
31	27
32	42
33	58
34	73
35	85
36	92
37	9
38	17
39	31
40	49
41	69
42	89
43	107
44	121
45	129
46	10
47	19
48	35
49	56
50	80
51	105
52	129
53	150
54	166
55	175

n	a(n)
1	1
2	2
3	3
4	3
5	5
6	7
7	4
8	7
9	11
10	14
11	5
12	9
13	15
14	21
15	25
16	6
17	11
18	19
19	28
20	36
21	41
22	7
23	13
24	23
25	35
26	47
27	57
28	63
29	8
30	15
31	27
32	42
33	58
34	73
35	85
36	92
37	9
38	17
39	31
40	49
41	69
42	89
43	107
44	121
45	129
46	10
47	19
48	35
49	56
50	80
51	105
52	129
53	150
54	166
55	175