A290882 - cp's OEIS frontend

A290882 E.g.f. E(x) = C(x) + S(x) such that C(x)^2 - S(x)^2 = 1 and C'(x)^2 + S'(x)^2 = 1, where C(x) is the e.g.f. of A290880 and S(x) is the e.g.f. of A290881.

n	a(n)
0	1
1	1
2	1
3	-1
4	-7
5	25
6	265
7	-1705
8	-24175
9	227665
10	4037425
11	-50333425
12	-1070526775
13	16655398825
14	412826556025
15	-7711225809625
16	-218150106913375
17	4760499335502625
18	151297155973926625
19	-3779764853639958625
20	-133288452772763494375
21	3752942823715824285625
22	145378048431548466795625
23	-4556465805050372544735625
24	-192296944484564858674279375
25	6641455313355871353308640625

[1, 1, 1, -1, -7, 25, 265, -1705, -24175, 227665, 4037425, -50333425, -1070526775, 16655398825, 412826556025, -7711225809625, -218150106913375, 4760499335502625, 151297155973926625, -3779764853639958625, -133288452772763494375, 3752942823715824285625, 145378048431548466795625, -4556465805050372544735625, -192296944484564858674279375, 6641455313355871353308640625]

cp's OEIS Frontend

A290882 E.g.f. E(x) = C(x) + S(x) such that C(x)^2 - S(x)^2 = 1 and C'(x)^2 + S'(x)^2 = 1, where C(x) is the e.g.f. of A290880 and S(x) is the e.g.f. of A290881.

Table of values

List of values