A247594 - cp's OEIS frontend

A247594 a(n) = a(n-1) + a(n-2) + 3*a(n-3) with a(0) = 1, a(1) = 2, a(2) = 5.

n	a(n)
0	1
1	2
2	5
3	10
4	21
5	46
6	97
7	206
8	441
9	938
10	1997
11	4258
12	9069
13	19318
14	41161
15	87686
16	186801
17	397970
18	847829
19	1806202
20	3847941
21	8197630
22	17464177
23	37205630
24	79262697
25	168860858
26	359740445
27	766389394
28	1632712413
29	3478323142
30	7410203737
31	15786664118
32	33631837281

[1, 2, 5, 10, 21, 46, 97, 206, 441, 938, 1997, 4258, 9069, 19318, 41161, 87686, 186801, 397970, 847829, 1806202, 3847941, 8197630, 17464177, 37205630, 79262697, 168860858, 359740445, 766389394, 1632712413, 3478323142, 7410203737, 15786664118, 33631837281]

cp's OEIS Frontend

A247594 a(n) = a(n-1) + a(n-2) + 3*a(n-3) with a(0) = 1, a(1) = 2, a(2) = 5.

Table of values

List of values