A298400 - cp's OEIS frontend

A298400 a(n) = a(n-1) + a(n-2) - n*a(floor(n/2)), where a(0) = 1, a(1) = 1, a(2) = 1.

n	a(n)
0	1
1	1
2	1
3	-1
4	-4
5	-10
6	-8
7	-11
8	13
9	38
10	151
11	299
12	546
13	949
14	1649
15	2763
16	4204
17	6746
18	10266
19	16290
20	23536
21	36655
22	53613
23	83391
24	123900
25	193641
26	292867
27	460885
28	707580
29	1120644
30	1745334
31	2780325
32	4391131
33	7032724
34	11194491
35	17991105
36	28816020
37	46427283
38	74624283

[1, 1, 1, -1, -4, -10, -8, -11, 13, 38, 151, 299, 546, 949, 1649, 2763, 4204, 6746, 10266, 16290, 23536, 36655, 53613, 83391, 123900, 193641, 292867, 460885, 707580, 1120644, 1745334, 2780325, 4391131, 7032724, 11194491, 17991105, 28816020, 46427283, 74624283]

cp's OEIS Frontend

A298400 a(n) = a(n-1) + a(n-2) - n*a(floor(n/2)), where a(0) = 1, a(1) = 1, a(2) = 1.

Table of values

List of values