A355759 - cp's OEIS frontend

A355759 Sums of the first ceiling((n+1)/2) entries on the diagonals of a square spiral with a starting value of 1 in the center, where the diagonal and the antidiagonal are used alternately.

n	a(n)
1	1
2	4
3	6
4	11
5	15
6	24
7	32
8	45
9	57
10	76
11	94
12	119
13	143
14	176
15	208
16	249
17	289
18	340
19	390
20	451
21	511
22	584
23	656
24	741
25	825
26	924
27	1022
28	1135
29	1247
30	1376
31	1504
32	1649
33	1793
34	1956
35	2118
36	2299
37	2479
38	2680
39	2880
40	3101
41	3321
42	3564
43	3806
44	4071
45	4335
46	4624
47	4912
48	5225
49	5537
50	5876
51	6214
52	6579
53	6943

[1, 4, 6, 11, 15, 24, 32, 45, 57, 76, 94, 119, 143, 176, 208, 249, 289, 340, 390, 451, 511, 584, 656, 741, 825, 924, 1022, 1135, 1247, 1376, 1504, 1649, 1793, 1956, 2118, 2299, 2479, 2680, 2880, 3101, 3321, 3564, 3806, 4071, 4335, 4624, 4912, 5225, 5537, 5876, 6214, 6579, 6943]

cp's OEIS Frontend

A355759 Sums of the first ceiling((n+1)/2) entries on the diagonals of a square spiral with a starting value of 1 in the center, where the diagonal and the antidiagonal are used alternately.

Table of values

List of values