A074860 - cp's OEIS frontend

A074860 a(n) = a(n-1) + R(a(n-2)) + R(a(n-3)) where a(0)=a(1)=a(2)=1 and R(k) = A004086(k) is the reverse of k.

n	a(n)
0	1
1	1
2	1
3	3
4	5
5	9
6	17
7	31
8	111
9	195
10	319
11	1021
12	2525
13	4639
14	11092
15	25708
16	64083
17	173846
18	292644
19	979061
20	2073724
21	2680995
22	7115676
23	17380240
24	30136219
25	41109707
26	136581181
27	298634398
28	550610143
29	1625232666
30	2859685613
31	9863026929
32	19691221772
33	32153295043

[1, 1, 1, 3, 5, 9, 17, 31, 111, 195, 319, 1021, 2525, 4639, 11092, 25708, 64083, 173846, 292644, 979061, 2073724, 2680995, 7115676, 17380240, 30136219, 41109707, 136581181, 298634398, 550610143, 1625232666, 2859685613, 9863026929, 19691221772, 32153295043]

cp's OEIS Frontend

A074860 a(n) = a(n-1) + R(a(n-2)) + R(a(n-3)) where a(0)=a(1)=a(2)=1 and R(k) = A004086(k) is the reverse of k.

Table of values

List of values