A185755 - cp's OEIS frontend

A185755 Triangle: T(n,k) equals the coefficient of x^ny^k in the n-th iteration of x(1+xy)/(1-x), for n>=1, 0<=k as read by rows.

n	a(n)
1	1
2	2
3	2
4	9
5	15
6	6
7	64
8	154
9	120
10	30
11	625
12	1995
13	2340
14	1190
15	220
16	7776
17	31191
18	49315
19	38325
20	14595
21	2170
22	117649
23	571221
24	1142932
25	1204588
26	704102
27	215950
28	27076
29	2097152
30	11992688
31	29141994
32	38972388
33	30945432
34	14570976
35	3761310
36	409836

[1, 2, 2, 9, 15, 6, 64, 154, 120, 30, 625, 1995, 2340, 1190, 220, 7776, 31191, 49315, 38325, 14595, 2170, 117649, 571221, 1142932, 1204588, 704102, 215950, 27076, 2097152, 11992688, 29141994, 38972388, 30945432, 14570976, 3761310, 409836]

cp's OEIS Frontend

A185755 Triangle: T(n,k) equals the coefficient of x^ny^k in the n-th iteration of x(1+xy)/(1-x), for n>=1, 0<=k as read by rows.

Table of values

List of values

cp's OEIS Frontend

A185755 Triangle: T(n,k) equals the coefficient of x^n*y^k in the n-th iteration of x*(1+xy)/(1-x), for n>=1, 0<=k as read by rows.

Table of values

List of values

A185755 Triangle: T(n,k) equals the coefficient of x^ny^k in the n-th iteration of x(1+xy)/(1-x), for n>=1, 0<=k as read by rows.