A228958 - cp's OEIS frontend

A228958 a(n) = 12 + 34 + 56 + 78 + 910 + 1112 + 13*14 + ... + (up to n).

n	a(n)
1	1
2	2
3	5
4	14
5	19
6	44
7	51
8	100
9	109
10	190
11	201
12	322
13	335
14	504
15	519
16	744
17	761
18	1050
19	1069
20	1430
21	1451
22	1892
23	1915
24	2444
25	2469
26	3094
27	3121
28	3850
29	3879
30	4720
31	4751
32	5712
33	5745
34	6834
35	6869
36	8094
37	8131
38	9500
39	9539
40	11060
41	11101
42	12782
43	12825
44	14674
45	14719
46	16744

[1, 2, 5, 14, 19, 44, 51, 100, 109, 190, 201, 322, 335, 504, 519, 744, 761, 1050, 1069, 1430, 1451, 1892, 1915, 2444, 2469, 3094, 3121, 3850, 3879, 4720, 4751, 5712, 5745, 6834, 6869, 8094, 8131, 9500, 9539, 11060, 11101, 12782, 12825, 14674, 14719, 16744]

cp's OEIS Frontend

A228958 a(n) = 12 + 34 + 56 + 78 + 910 + 1112 + 13*14 + ... + (up to n).

Table of values

List of values

cp's OEIS Frontend

A228958 a(n) = 1*2 + 3*4 + 5*6 + 7*8 + 9*10 + 11*12 + 13*14 + ... + (up to n).

Table of values

List of values

A228958 a(n) = 12 + 34 + 56 + 78 + 910 + 1112 + 13*14 + ... + (up to n).