A258313 - cp's OEIS frontend

A258313 G.f. A(x) satisfies: A(x) = B(x)C(x) where B(x) = 1 + xA(x)C(x) and C(x) = 1 + 2xA(x)B(x).

n	a(n)
0	1
1	3
2	15
3	93
4	641
5	4719
6	36335
7	289017
8	2356321
9	19586283
10	165364799
11	1414193205
12	12224831937
13	106645825047
14	937685498271
15	8301129707121
16	73929906605249
17	661919872559763
18	5954449287679919
19	53791836313371405
20	487807821246726273
21	4438980860105747967
22	40521481906592540175

[1, 3, 15, 93, 641, 4719, 36335, 289017, 2356321, 19586283, 165364799, 1414193205, 12224831937, 106645825047, 937685498271, 8301129707121, 73929906605249, 661919872559763, 5954449287679919, 53791836313371405, 487807821246726273, 4438980860105747967, 40521481906592540175]

cp's OEIS Frontend

A258313 G.f. A(x) satisfies: A(x) = B(x)C(x) where B(x) = 1 + xA(x)C(x) and C(x) = 1 + 2xA(x)B(x).

Table of values

List of values

cp's OEIS Frontend

A258313 G.f. A(x) satisfies: A(x) = B(x)*C(x) where B(x) = 1 + x*A(x)*C(x) and C(x) = 1 + 2*x*A(x)*B(x).

Table of values

List of values

A258313 G.f. A(x) satisfies: A(x) = B(x)C(x) where B(x) = 1 + xA(x)C(x) and C(x) = 1 + 2xA(x)B(x).