A355808 - cp's OEIS frontend

A355808 a(n) is the number at the apex of a triangle whose base contains the distinct powers of 2 summing to n (in ascending order), and each number in a higher row is the difference of the two numbers directly below it; a(0) = 0.

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

[0, 1, 2, 1, 4, 3, 2, 1, 8, 7, 6, 5, 4, 1, 2, 1, 16, 15, 14, 13, 12, 9, 10, 9, 8, 1, 2, -3, 4, 3, 2, 1, 32, 31, 30, 29, 28, 25, 26, 25, 24, 17, 18, 13, 20, 19, 18, 17, 16, 1, 2, -11, 4, -5, -6, -15, 8, 7, 6, 9, 4, 1, 2, 1, 64, 63, 62, 61, 60, 57, 58, 57, 56, 49]

cp's OEIS Frontend

A355808 a(n) is the number at the apex of a triangle whose base contains the distinct powers of 2 summing to n (in ascending order), and each number in a higher row is the difference of the two numbers directly below it; a(0) = 0.

Table of values

List of values

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

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

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