A342912 - cp's OEIS frontend

A342912 a(n) = [x^n] (1 - 2x - sqrt((1 - 3x)/(1 + x)))/(2*x^3).

n	a(n)
0	1
1	1
2	3
3	6
4	15
5	36
6	91
7	232
8	603
9	1585
10	4213
11	11298
12	30537
13	83097
14	227475
15	625992
16	1730787
17	4805595
18	13393689
19	37458330
20	105089229
21	295673994
22	834086421
23	2358641376
24	6684761125
25	18985057351
26	54022715451
27	154000562758
28	439742222071
29	1257643249140
30	3602118427251

[1, 1, 3, 6, 15, 36, 91, 232, 603, 1585, 4213, 11298, 30537, 83097, 227475, 625992, 1730787, 4805595, 13393689, 37458330, 105089229, 295673994, 834086421, 2358641376, 6684761125, 18985057351, 54022715451, 154000562758, 439742222071, 1257643249140, 3602118427251]

cp's OEIS Frontend

A342912 a(n) = [x^n] (1 - 2x - sqrt((1 - 3x)/(1 + x)))/(2*x^3).

Table of values

List of values

cp's OEIS Frontend

A342912 a(n) = [x^n] (1 - 2*x - sqrt((1 - 3*x)/(1 + x)))/(2*x^3).

Table of values

List of values

A342912 a(n) = [x^n] (1 - 2x - sqrt((1 - 3x)/(1 + x)))/(2*x^3).