A333601 - cp's OEIS frontend

A333601 Number of integers from 0 to the triangular number A000217(n) that cannot be represented as a difference of triangular numbers from 0 to n.

n	a(n)
0	0
1	0
2	0
3	1
4	1
5	3
6	5
7	7
8	9
9	12
10	15
11	19
12	23
13	28
14	35
15	43
16	47
17	52
18	61
19	67
20	76
21	85
22	94
23	105
24	114
25	125
26	137
27	149
28	161
29	175
30	190
31	203
32	216
33	232
34	246
35	261
36	278
37	292
38	309
39	329
40	346
41	365
42	384
43	404
44	426
45	449
46	470
47	493
48	516
49	536
50	562
51	587
52	611
53	637
54	665
55	691
56	719
57	746
58	770
59	800
60	831
61	860
62	889
63	923
64	951
65	983

[0, 0, 0, 1, 1, 3, 5, 7, 9, 12, 15, 19, 23, 28, 35, 43, 47, 52, 61, 67, 76, 85, 94, 105, 114, 125, 137, 149, 161, 175, 190, 203, 216, 232, 246, 261, 278, 292, 309, 329, 346, 365, 384, 404, 426, 449, 470, 493, 516, 536, 562, 587, 611, 637, 665, 691, 719, 746, 770, 800, 831, 860, 889, 923, 951, 983]

cp's OEIS Frontend

A333601 Number of integers from 0 to the triangular number A000217(n) that cannot be represented as a difference of triangular numbers from 0 to n.

Table of values

List of values

n	a(n)
0	0
1	0
2	0
3	1
4	1
5	3
6	5
7	7
8	9
9	12
10	15
11	19
12	23
13	28
14	35
15	43
16	47
17	52
18	61
19	67
20	76
21	85
22	94
23	105
24	114
25	125
26	137
27	149
28	161
29	175
30	190
31	203
32	216
33	232
34	246
35	261
36	278
37	292
38	309
39	329
40	346
41	365
42	384
43	404
44	426
45	449
46	470
47	493
48	516
49	536
50	562
51	587
52	611
53	637
54	665
55	691
56	719
57	746
58	770
59	800
60	831
61	860
62	889
63	923
64	951
65	983

n	a(n)
0	0
1	0
2	0
3	1
4	1
5	3
6	5
7	7
8	9
9	12
10	15
11	19
12	23
13	28
14	35
15	43
16	47
17	52
18	61
19	67
20	76
21	85
22	94
23	105
24	114
25	125
26	137
27	149
28	161
29	175
30	190
31	203
32	216
33	232
34	246
35	261
36	278
37	292
38	309
39	329
40	346
41	365
42	384
43	404
44	426
45	449
46	470
47	493
48	516
49	536
50	562
51	587
52	611
53	637
54	665
55	691
56	719
57	746
58	770
59	800
60	831
61	860
62	889
63	923
64	951
65	983

n	a(n)
0	0
1	0
2	0
3	1
4	1
5	3
6	5
7	7
8	9
9	12
10	15
11	19
12	23
13	28
14	35
15	43
16	47
17	52
18	61
19	67
20	76
21	85
22	94
23	105
24	114
25	125
26	137
27	149
28	161
29	175
30	190
31	203
32	216
33	232
34	246
35	261
36	278
37	292
38	309
39	329
40	346
41	365
42	384
43	404
44	426
45	449
46	470
47	493
48	516
49	536
50	562
51	587
52	611
53	637
54	665
55	691
56	719
57	746
58	770
59	800
60	831
61	860
62	889
63	923
64	951
65	983