A038221 - cp's OEIS frontend

A038221 Triangle whose (i,j)-th entry is binomial(i,j)3^(i-j)3^j.

n	a(n)
0	1
1	3
2	3
3	9
4	18
5	9
6	27
7	81
8	81
9	27
10	81
11	324
12	486
13	324
14	81
15	243
16	1215
17	2430
18	2430
19	1215
20	243
21	729
22	4374
23	10935
24	14580
25	10935
26	4374
27	729
28	2187
29	15309
30	45927
31	76545
32	76545
33	45927
34	15309
35	2187
36	6561
37	52488
38	183708
39	367416
40	459270
41	367416
42	183708
43	52488
44	6561

[1, 3, 3, 9, 18, 9, 27, 81, 81, 27, 81, 324, 486, 324, 81, 243, 1215, 2430, 2430, 1215, 243, 729, 4374, 10935, 14580, 10935, 4374, 729, 2187, 15309, 45927, 76545, 76545, 45927, 15309, 2187, 6561, 52488, 183708, 367416, 459270, 367416, 183708, 52488, 6561]

cp's OEIS Frontend

A038221 Triangle whose (i,j)-th entry is binomial(i,j)3^(i-j)3^j.

Table of values

List of values

cp's OEIS Frontend

A038221 Triangle whose (i,j)-th entry is binomial(i,j)*3^(i-j)*3^j.

Table of values

List of values

A038221 Triangle whose (i,j)-th entry is binomial(i,j)3^(i-j)3^j.