A290883 - cp's OEIS frontend

A290883 E.g.f. A(x) = sqrt(C(x)^2 + S(x)^2) 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	2
2	-20
3	920
4	-95600
5	17588000
6	-5034785600
7	2068322672000
8	-1153339941728000
9	838147215114560000
10	-769492266756037760000
11	870869784123573927680000
12	-1191080747725445120960000000
13	1936606018449416970940544000000
14	-3692030834904045806243452160000000
15	8156631422332715861303860160000000000
16	-20671774666617006397027638099614720000000

[1, 2, -20, 920, -95600, 17588000, -5034785600, 2068322672000, -1153339941728000, 838147215114560000, -769492266756037760000, 870869784123573927680000, -1191080747725445120960000000, 1936606018449416970940544000000, -3692030834904045806243452160000000, 8156631422332715861303860160000000000, -20671774666617006397027638099614720000000]

cp's OEIS Frontend

A290883 E.g.f. A(x) = sqrt(C(x)^2 + S(x)^2) 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