A299914 - cp's OEIS frontend

A299914 a(n) = a(n-1) + 3a(n-2) if n even, or 2a(n-1) + 4*a(n-2) if n odd, starting with 0, 1.

n	a(n)
0	0
1	1
2	1
3	6
4	9
5	42
6	69
7	306
8	513
9	2250
10	3789
11	16578
12	27945
13	122202
14	206037
15	900882
16	1518993
17	6641514
18	11198493
19	48963042
20	82558521
21	360969210
22	608644773
23	2661166386
24	4487100705
25	19618866954
26	33080169069
27	144635805954
28	243876313161
29	1066295850138
30	1797924789621

[0, 1, 1, 6, 9, 42, 69, 306, 513, 2250, 3789, 16578, 27945, 122202, 206037, 900882, 1518993, 6641514, 11198493, 48963042, 82558521, 360969210, 608644773, 2661166386, 4487100705, 19618866954, 33080169069, 144635805954, 243876313161, 1066295850138, 1797924789621]

cp's OEIS Frontend

A299914 a(n) = a(n-1) + 3a(n-2) if n even, or 2a(n-1) + 4*a(n-2) if n odd, starting with 0, 1.

Table of values

List of values

cp's OEIS Frontend

A299914 a(n) = a(n-1) + 3*a(n-2) if n even, or 2*a(n-1) + 4*a(n-2) if n odd, starting with 0, 1.

Table of values

List of values

A299914 a(n) = a(n-1) + 3a(n-2) if n even, or 2a(n-1) + 4*a(n-2) if n odd, starting with 0, 1.