A074863 - cp's OEIS frontend

A074863 a(n) = a(n-1) + a(n-2) + a(n-3) + R(a(n-4)) where a(0)=a(1)=a(2)=a(3)=1 and R(n) (A004086) is the reverse of n.

n	a(n)
0	1
1	1
2	1
3	1
4	4
5	7
6	13
7	25
8	49
9	94
10	199
11	394
12	781
13	1423
14	3589
15	6286
16	11485
17	24601
18	52225
19	95137
20	230374
21	388378
22	766114
23	1458025
24	3085549
25	6183571
26	11138812
27	25616473
28	52394659
29	90903760
30	190798003
31	371558074
32	748909162
33	1317996148
34	2739360475
35	5277120958

[1, 1, 1, 1, 4, 7, 13, 25, 49, 94, 199, 394, 781, 1423, 3589, 6286, 11485, 24601, 52225, 95137, 230374, 388378, 766114, 1458025, 3085549, 6183571, 11138812, 25616473, 52394659, 90903760, 190798003, 371558074, 748909162, 1317996148, 2739360475, 5277120958]

cp's OEIS Frontend

A074863 a(n) = a(n-1) + a(n-2) + a(n-3) + R(a(n-4)) where a(0)=a(1)=a(2)=a(3)=1 and R(n) (A004086) is the reverse of n.

Table of values

List of values