A053461 - cp's OEIS frontend

A053461 a(0) = 0; a(n) = a(n-1) - n^2 if positive and new, otherwise a(n) = a(n-1) + n^2.

n	a(n)
0	0
1	1
2	5
3	14
4	30
5	55
6	19
7	68
8	4
9	85
10	185
11	64
12	208
13	39
14	235
15	10
16	266
17	555
18	231
19	592
20	192
21	633
22	149
23	678
24	102
25	727
26	51
27	780
28	1564
29	723
30	1623
31	662
32	1686
33	597
34	1753
35	528
36	1824
37	455
38	1899
39	378
40	1978
41	297
42	2061
43	212
44	2148
45	123
46	2239
47	4448
48	2144
49	4545

[0, 1, 5, 14, 30, 55, 19, 68, 4, 85, 185, 64, 208, 39, 235, 10, 266, 555, 231, 592, 192, 633, 149, 678, 102, 727, 51, 780, 1564, 723, 1623, 662, 1686, 597, 1753, 528, 1824, 455, 1899, 378, 1978, 297, 2061, 212, 2148, 123, 2239, 4448, 2144, 4545]

cp's OEIS Frontend

A053461 a(0) = 0; a(n) = a(n-1) - n^2 if positive and new, otherwise a(n) = a(n-1) + n^2.

Table of values

List of values