A143630 - cp's OEIS frontend

A143630 Define E(n) = Sum_{k >= 0} (-1)^floor(k/3)*k^n/k! for n = 0,1,2,.... Then E(n) is an integral linear combination of E(0), E(1) and E(2). This sequence lists the coefficients of E(2).

n	a(n)
0	0
1	0
2	1
3	3
4	7
5	14
6	16
7	-77
8	-922
9	-6660
10	-41264
11	-233828
12	-1218392
13	-5607225
14	-19220589
15	4397930
16	1016675382
17	14251497833
18	151695504253
19	1432992328055
20	12527186450276
21	102042171190168
22	760272520469199
23	4849866087637364

[0, 0, 1, 3, 7, 14, 16, -77, -922, -6660, -41264, -233828, -1218392, -5607225, -19220589, 4397930, 1016675382, 14251497833, 151695504253, 1432992328055, 12527186450276, 102042171190168, 760272520469199, 4849866087637364]

cp's OEIS Frontend

A143630 Define E(n) = Sum_{k >= 0} (-1)^floor(k/3)*k^n/k! for n = 0,1,2,.... Then E(n) is an integral linear combination of E(0), E(1) and E(2). This sequence lists the coefficients of E(2).

Table of values

List of values