A020992 - cp's OEIS frontend

A020992 a(n) = a(n-1) + a(n-2) + a(n-3), with a(0) = 0, a(1) = 2, a(2) = 1.

n	a(n)
0	0
1	2
2	1
3	3
4	6
5	10
6	19
7	35
8	64
9	118
10	217
11	399
12	734
13	1350
14	2483
15	4567
16	8400
17	15450
18	28417
19	52267
20	96134
21	176818
22	325219
23	598171
24	1100208
25	2023598
26	3721977
27	6845783
28	12591358
29	23159118
30	42596259
31	78346735
32	144102112
33	265045106
34	487493953
35	896641171
36	1649180230

[0, 2, 1, 3, 6, 10, 19, 35, 64, 118, 217, 399, 734, 1350, 2483, 4567, 8400, 15450, 28417, 52267, 96134, 176818, 325219, 598171, 1100208, 2023598, 3721977, 6845783, 12591358, 23159118, 42596259, 78346735, 144102112, 265045106, 487493953, 896641171, 1649180230]

cp's OEIS Frontend

A020992 a(n) = a(n-1) + a(n-2) + a(n-3), with a(0) = 0, a(1) = 2, a(2) = 1.

Table of values

List of values