A319493 - cp's OEIS frontend

A319493 a(n) = 12 - 3 + 45 - 6 + 78 - 9 + 1011 - 12 + 13*14 - ... + (up to n).

n	a(n)
1	1
2	2
3	-1
4	3
5	19
6	13
7	20
8	69
9	60
10	70
11	170
12	158
13	171
14	340
15	325
16	341
17	597
18	579
19	598
20	959
21	938
22	960
23	1444
24	1420
25	1445
26	2070
27	2043
28	2071
29	2855
30	2825
31	2856
32	3817
33	3784
34	3818
35	4974
36	4938
37	4975
38	6344
39	6305
40	6345
41	7945
42	7903
43	7946
44	9795
45	9750
46	9796
47	11912
48	11864
49	11913

[1, 2, -1, 3, 19, 13, 20, 69, 60, 70, 170, 158, 171, 340, 325, 341, 597, 579, 598, 959, 938, 960, 1444, 1420, 1445, 2070, 2043, 2071, 2855, 2825, 2856, 3817, 3784, 3818, 4974, 4938, 4975, 6344, 6305, 6345, 7945, 7903, 7946, 9795, 9750, 9796, 11912, 11864, 11913]

cp's OEIS Frontend

A319493 a(n) = 12 - 3 + 45 - 6 + 78 - 9 + 1011 - 12 + 13*14 - ... + (up to n).

Table of values

List of values

cp's OEIS Frontend

A319493 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

A319493 a(n) = 12 - 3 + 45 - 6 + 78 - 9 + 1011 - 12 + 13*14 - ... + (up to n).