A256960 - cp's OEIS frontend

A256960 a(0)=1, a(1)=4; thereafter a(n) = a(n-2)+2*A055099(n-1)+2^(n-1).

n	a(n)
0	1
1	4
2	11
3	36
4	119
5	408
6	1419
7	4988
8	17631
9	62528
10	222163
11	790180
12	2812135
13	10011304
14	35647259
15	126942540
16	452078447
17	1610033040
18	5734081251
19	20421960308
20	72733344375
21	259042555640
22	922591559467
23	3285854197276
24	11702734525951
25	41679889602784
26	148445093121011
27	528694969090116

[1, 4, 11, 36, 119, 408, 1419, 4988, 17631, 62528, 222163, 790180, 2812135, 10011304, 35647259, 126942540, 452078447, 1610033040, 5734081251, 20421960308, 72733344375, 259042555640, 922591559467, 3285854197276, 11702734525951, 41679889602784, 148445093121011, 528694969090116]

cp's OEIS Frontend

A256960 a(0)=1, a(1)=4; thereafter a(n) = a(n-2)+2*A055099(n-1)+2^(n-1).

Table of values

List of values