A111808 - cp's OEIS frontend

A111808 Left half of trinomial triangle (A027907), triangle read by rows.

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	3
7	1
8	3
9	6
10	7
11	1
12	4
13	10
14	16
15	19
16	1
17	5
18	15
19	30
20	45
21	51
22	1
23	6
24	21
25	50
26	90
27	126
28	141
29	1
30	7
31	28
32	77
33	161
34	266
35	357
36	393
37	1
38	8
39	36
40	112
41	266
42	504
43	784
44	1016
45	1107
46	1
47	9
48	45
49	156
50	414
51	882
52	1554
53	2304
54	2907
55	3139
56	1
57	10
58	55
59	210
60	615
61	1452
62	2850
63	4740
64	6765
65	8350

[1, 1, 1, 1, 2, 3, 1, 3, 6, 7, 1, 4, 10, 16, 19, 1, 5, 15, 30, 45, 51, 1, 6, 21, 50, 90, 126, 141, 1, 7, 28, 77, 161, 266, 357, 393, 1, 8, 36, 112, 266, 504, 784, 1016, 1107, 1, 9, 45, 156, 414, 882, 1554, 2304, 2907, 3139, 1, 10, 55, 210, 615, 1452, 2850, 4740, 6765, 8350]

cp's OEIS Frontend

A111808 Left half of trinomial triangle (A027907), triangle read by rows.

Table of values

List of values