A175898 - cp's OEIS frontend

A175898 Expansion of (1+3x+9x^2+9x^3+9x^4+3x^5+x^6) /( (1+x)^2 (1-x)^5 ).

n	a(n)
0	1
1	6
2	26
3	76
4	186
5	386
6	726
7	1251
8	2031
9	3126
10	4626
11	6606
12	9176
13	12426
14	16486
15	21461
16	27501
17	34726
18	43306
19	53376
20	65126
21	78706
22	94326
23	112151
24	132411
25	155286
26	181026
27	209826
28	241956
29	277626
30	317126
31	360681
32	408601
33	461126
34	518586
35	581236
36	649426
37	723426

[1, 6, 26, 76, 186, 386, 726, 1251, 2031, 3126, 4626, 6606, 9176, 12426, 16486, 21461, 27501, 34726, 43306, 53376, 65126, 78706, 94326, 112151, 132411, 155286, 181026, 209826, 241956, 277626, 317126, 360681, 408601, 461126, 518586, 581236, 649426, 723426]

cp's OEIS Frontend

A175898 Expansion of (1+3x+9x^2+9x^3+9x^4+3x^5+x^6) /( (1+x)^2 (1-x)^5 ).

Table of values

List of values

cp's OEIS Frontend

A175898 Expansion of (1+3*x+9*x^2+9*x^3+9*x^4+3*x^5+x^6) /( (1+x)^2 * (1-x)^5 ).

Table of values

List of values

A175898 Expansion of (1+3x+9x^2+9x^3+9x^4+3x^5+x^6) /( (1+x)^2 (1-x)^5 ).