A081704 - cp's OEIS frontend

A081704 Let f(0)=1, f(1)=t, f(n+1) = (f(n)^2+t^n)/f(n-1). f(t) is a polynomial with integer coefficients. Then a(n) = f(n) when t=3.

n	a(n)
0	1
1	3
2	12
3	51
4	219
5	942
6	4053
7	17439
8	75036
9	322863
10	1389207
11	5977446
12	25719609
13	110665707
14	476169708
15	2048851419
16	8815747971
17	37932185598
18	163213684077
19	702271863591
20	3021718265724
21	13001775737847
22	55943723892063
23	240713292246774
24	1035735289557681

[1, 3, 12, 51, 219, 942, 4053, 17439, 75036, 322863, 1389207, 5977446, 25719609, 110665707, 476169708, 2048851419, 8815747971, 37932185598, 163213684077, 702271863591, 3021718265724, 13001775737847, 55943723892063, 240713292246774, 1035735289557681]

cp's OEIS Frontend

A081704 Let f(0)=1, f(1)=t, f(n+1) = (f(n)^2+t^n)/f(n-1). f(t) is a polynomial with integer coefficients. Then a(n) = f(n) when t=3.

Table of values

List of values