A298401 - cp's OEIS frontend

A298401 a(n) = a(n-1) + a(n-2) - n*a(floor(n/2)), where a(0) = 1, a(1) = 2, a(2) = 3.

n	a(n)
0	1
1	2
2	3
3	-1
4	-10
5	-26
6	-30
7	-49
8	1
9	42
10	303
11	631
12	1294
13	2315
14	4295
15	7345
16	11624
17	18952
18	29820
19	47974
20	71734
21	113345
22	171197
23	270029
24	410170
25	647849
26	997829
27	1583173
28	2460742
29	3919360
30	6159752
31	9851417
32	15639201
33	25107026
34	40101859
35	64545565
36	103573904

[1, 2, 3, -1, -10, -26, -30, -49, 1, 42, 303, 631, 1294, 2315, 4295, 7345, 11624, 18952, 29820, 47974, 71734, 113345, 171197, 270029, 410170, 647849, 997829, 1583173, 2460742, 3919360, 6159752, 9851417, 15639201, 25107026, 40101859, 64545565, 103573904]

cp's OEIS Frontend

A298401 a(n) = a(n-1) + a(n-2) - n*a(floor(n/2)), where a(0) = 1, a(1) = 2, a(2) = 3.

Table of values

List of values