A334821 - cp's OEIS frontend

A334821 Number of integers from 0 to the triangular number A000217(n) that can be represented as a difference of triangular numbers from 0 to n.

n	a(n)
0	1
1	2
2	4
3	6
4	10
5	13
6	17
7	22
8	28
9	34
10	41
11	48
12	56
13	64
14	71
15	78
16	90
17	102
18	111
19	124
20	135
21	147
22	160
23	172
24	187
25	201
26	215
27	230
28	246
29	261
30	276
31	294
32	313
33	330
34	350
35	370
36	389
37	412
38	433
39	452
40	475
41	497
42	520
43	543
44	565
45	587
46	612
47	636
48	661
49	690
50	714
51	740
52	768
53	795
54	821
55	850
56	878
57	908
58	942
59	971
60	1000
61	1032
62	1065

[1, 2, 4, 6, 10, 13, 17, 22, 28, 34, 41, 48, 56, 64, 71, 78, 90, 102, 111, 124, 135, 147, 160, 172, 187, 201, 215, 230, 246, 261, 276, 294, 313, 330, 350, 370, 389, 412, 433, 452, 475, 497, 520, 543, 565, 587, 612, 636, 661, 690, 714, 740, 768, 795, 821, 850, 878, 908, 942, 971, 1000, 1032, 1065]

cp's OEIS Frontend

A334821 Number of integers from 0 to the triangular number A000217(n) that can be represented as a difference of triangular numbers from 0 to n.

Table of values

List of values