A299913 - cp's OEIS frontend

A299913 a(n) = a(n-1) + 2a(n-2) if n even, or 3a(n-1) + 4*a(n-2) if n odd, starting with 0, 1.

n	a(n)
0	0
1	1
2	1
3	7
4	9
5	55
6	73
7	439
8	585
9	3511
10	4681
11	28087
12	37449
13	224695
14	299593
15	1797559
16	2396745
17	14380471
18	19173961
19	115043767
20	153391689
21	920350135
22	1227133513
23	7362801079
24	9817068105
25	58902408631
26	78536544841
27	471219269047
28	628292358729
29	3769754152375
30	5026338869833

[0, 1, 1, 7, 9, 55, 73, 439, 585, 3511, 4681, 28087, 37449, 224695, 299593, 1797559, 2396745, 14380471, 19173961, 115043767, 153391689, 920350135, 1227133513, 7362801079, 9817068105, 58902408631, 78536544841, 471219269047, 628292358729, 3769754152375, 5026338869833]

cp's OEIS Frontend

A299913 a(n) = a(n-1) + 2a(n-2) if n even, or 3a(n-1) + 4*a(n-2) if n odd, starting with 0, 1.

Table of values

List of values

cp's OEIS Frontend

A299913 a(n) = a(n-1) + 2*a(n-2) if n even, or 3*a(n-1) + 4*a(n-2) if n odd, starting with 0, 1.

Table of values

List of values

A299913 a(n) = a(n-1) + 2a(n-2) if n even, or 3a(n-1) + 4*a(n-2) if n odd, starting with 0, 1.