A372383 - cp's OEIS frontend

A372383 Expansion of (1/x) * Series_Reversion( x * (1+x)^3 / (1+x+x^2)^4 ).

n	a(n)
0	1
1	1
2	5
3	13
4	63
5	225
6	1069
7	4425
8	21008
9	93927
10	449574
11	2099993
12	10161845
13	48761421
14	238544091
15	1165258909
16	5756929854
17	28480358700
18	141911407403
19	708766944499
20	3557401656125
21	17900413391858
22	90401732441880
23	457657822713177
24	2323507912981800
25	11822283300379509

[1, 1, 5, 13, 63, 225, 1069, 4425, 21008, 93927, 449574, 2099993, 10161845, 48761421, 238544091, 1165258909, 5756929854, 28480358700, 141911407403, 708766944499, 3557401656125, 17900413391858, 90401732441880, 457657822713177, 2323507912981800, 11822283300379509]

cp's OEIS Frontend

A372383 Expansion of (1/x) * Series_Reversion( x * (1+x)^3 / (1+x+x^2)^4 ).

Table of values

List of values