A201509 - cp's OEIS frontend

A201509 Irregular triangle read by rows: T(n,k) = 2*T(n-1,k) + T(n-2,k-1) with T(0,0) = 0, T(n,0) = T(1,1) = 1 and T(n,k) = 0 if k < 0 or if n < k.

n	a(n)
0	1
1	1
2	2
3	2
4	4
5	5
6	1
7	8
8	12
9	4
10	16
11	28
12	13
13	1
14	32
15	64
16	38
17	6
18	64
19	144
20	104
21	25
22	1
23	128
24	320
25	272
26	88
27	8
28	256
29	704
30	688
31	280
32	41
33	1
34	512
35	1536
36	1696
37	832
38	170
39	10
40	1024
41	3328
42	4096
43	2352
44	620
45	61
46	1
47	2048
48	7168

[1, 1, 2, 2, 4, 5, 1, 8, 12, 4, 16, 28, 13, 1, 32, 64, 38, 6, 64, 144, 104, 25, 1, 128, 320, 272, 88, 8, 256, 704, 688, 280, 41, 1, 512, 1536, 1696, 832, 170, 10, 1024, 3328, 4096, 2352, 620, 61, 1, 2048, 7168]

cp's OEIS Frontend

A201509 Irregular triangle read by rows: T(n,k) = 2*T(n-1,k) + T(n-2,k-1) with T(0,0) = 0, T(n,0) = T(1,1) = 1 and T(n,k) = 0 if k < 0 or if n < k.

Table of values

List of values