A206140 - cp's OEIS frontend

A206140 G.f.: Sum_{n>=0} x^n/Product_{k=1..n} (1 - Lucas(k)x^k + (-1)^kx^(2*k)).

n	a(n)
0	1
1	1
2	2
3	4
4	10
5	18
6	44
7	78
8	178
9	329
10	699
11	1299
12	2724
13	5013
14	10198
15	19076
16	37786
17	70448
18	138322
19	256649
20	497884
21	925309
22	1770195
23	3283971
24	6249417
25	11542969
26	21785791
27	40231877
28	75388314
29	138806128
30	259010824
31	475364152
32	882643035
33	1617443421
34	2988026528

[1, 1, 2, 4, 10, 18, 44, 78, 178, 329, 699, 1299, 2724, 5013, 10198, 19076, 37786, 70448, 138322, 256649, 497884, 925309, 1770195, 3283971, 6249417, 11542969, 21785791, 40231877, 75388314, 138806128, 259010824, 475364152, 882643035, 1617443421, 2988026528]

cp's OEIS Frontend

A206140 G.f.: Sum_{n>=0} x^n/Product_{k=1..n} (1 - Lucas(k)x^k + (-1)^kx^(2*k)).

Table of values

List of values

cp's OEIS Frontend

A206140 G.f.: Sum_{n>=0} x^n/Product_{k=1..n} (1 - Lucas(k)*x^k + (-1)^k*x^(2*k)).

Table of values

List of values

A206140 G.f.: Sum_{n>=0} x^n/Product_{k=1..n} (1 - Lucas(k)x^k + (-1)^kx^(2*k)).