A370241 - cp's OEIS frontend

A370241 Expansion of Sum_{n>=0} Product_{k=0..n} (x^k(1+x)^(n-k) + x^(n-k)(1+x)^k).

n	a(n)
0	3
1	6
2	15
3	36
4	98
5	258
6	677
7	1830
8	5006
9	13340
10	35215
11	95702
12	264851
13	717760
14	1894473
15	5031846
16	13788409
17	38375030
18	105005017
19	279236168
20	734728565
21	1967715202
22	5416631023
23	15061949148
24	41271428388
25	110250824636
26	289840310574
27	766277436248
28	2072808806434
29	5730605191220

[3, 6, 15, 36, 98, 258, 677, 1830, 5006, 13340, 35215, 95702, 264851, 717760, 1894473, 5031846, 13788409, 38375030, 105005017, 279236168, 734728565, 1967715202, 5416631023, 15061949148, 41271428388, 110250824636, 289840310574, 766277436248, 2072808806434, 5730605191220]

cp's OEIS Frontend

A370241 Expansion of Sum_{n>=0} Product_{k=0..n} (x^k(1+x)^(n-k) + x^(n-k)(1+x)^k).

Table of values

List of values

cp's OEIS Frontend

A370241 Expansion of Sum_{n>=0} Product_{k=0..n} (x^k*(1+x)^(n-k) + x^(n-k)*(1+x)^k).

Table of values

List of values

A370241 Expansion of Sum_{n>=0} Product_{k=0..n} (x^k(1+x)^(n-k) + x^(n-k)(1+x)^k).