A296274 - cp's OEIS frontend

A296274 Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-1)*b(n), where a(0) = 1, a(1) = 4, b(0) = 2, b(1) = 3, b(2) = 5, and (a(n)) and (b(n)) are increasing complementary sequences.

n	a(n)
0	1
1	4
2	20
3	54
4	116
5	226
6	414
7	730
8	1254
9	2116
10	3526
11	5824
12	9560
13	15624
14	25456
15	41386
16	67184
17	108969
18	176615
19	286090
20	463257
21	749947
22	1213854
23	1964503
24	3179113
25	5144428
26	8324411
27	13469769
28	21795172
29	35265997
30	57062291
31	92329478
32	149393029
33	241723839
34	391118274

[1, 4, 20, 54, 116, 226, 414, 730, 1254, 2116, 3526, 5824, 9560, 15624, 25456, 41386, 67184, 108969, 176615, 286090, 463257, 749947, 1213854, 1964503, 3179113, 5144428, 8324411, 13469769, 21795172, 35265997, 57062291, 92329478, 149393029, 241723839, 391118274]

cp's OEIS Frontend

A296274 Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-1)*b(n), where a(0) = 1, a(1) = 4, b(0) = 2, b(1) = 3, b(2) = 5, and (a(n)) and (b(n)) are increasing complementary sequences.

Table of values

List of values