A370469 - cp's OEIS frontend

A370469 Triangle read by columns where T(n,k) is the number of points in Z^n such that |x1| + ... + |xn| = k, |x1|, ..., |xn| > 0.

n	a(n)
1	2
2	2
3	4
4	2
5	8
6	8
7	2
8	12
9	24
10	16
11	2
12	16
13	48
14	64
15	32
16	2
17	20
18	80
19	160
20	160
21	64
22	2
23	24
24	120
25	320
26	480
27	384
28	128
29	2
30	28
31	168
32	560
33	1120
34	1344
35	896
36	256
37	2
38	32
39	224
40	896
41	2240
42	3584
43	3584
44	2048
45	512
46	2
47	36
48	288
49	1344
50	4032
51	8064
52	10752
53	9216
54	4608
55	1024

[2, 2, 4, 2, 8, 8, 2, 12, 24, 16, 2, 16, 48, 64, 32, 2, 20, 80, 160, 160, 64, 2, 24, 120, 320, 480, 384, 128, 2, 28, 168, 560, 1120, 1344, 896, 256, 2, 32, 224, 896, 2240, 3584, 3584, 2048, 512, 2, 36, 288, 1344, 4032, 8064, 10752, 9216, 4608, 1024]

cp's OEIS Frontend

A370469 Triangle read by columns where T(n,k) is the number of points in Z^n such that |x1| + ... + |xn| = k, |x1|, ..., |xn| > 0.

Table of values

List of values