A274965 - cp's OEIS frontend

A274965 G.f. A(x) satisfies: 1 = ...(((((A(x) - x)^(1/2) - x^2)^(1/2) - x^3)^(1/2) - x^4)^(1/2) - x^5)^(1/2) -...- x^n)^(1/2) -..., an infinite series of nested square roots.

n	a(n)
0	1
1	1
2	2
3	4
4	9
5	20
6	46
7	104
8	238
9	540
10	1228
11	2780
12	6289
13	14180
14	31924
15	71688
16	160694
17	359452
18	802642
19	1788988
20	3980916
21	8844064
22	19618506
23	43455324
24	96121164
25	212331796
26	468445180
27	1032216460
28	2271818652
29	4994434788
30	10968013396
31	24061103888
32	52730956193
33	115449870424
34	252530306764
35	551873275488
36	1204991320660
37	2628810554176
38	5730295148952
39	12480957518212
40	27163290056278

[1, 1, 2, 4, 9, 20, 46, 104, 238, 540, 1228, 2780, 6289, 14180, 31924, 71688, 160694, 359452, 802642, 1788988, 3980916, 8844064, 19618506, 43455324, 96121164, 212331796, 468445180, 1032216460, 2271818652, 4994434788, 10968013396, 24061103888, 52730956193, 115449870424, 252530306764, 551873275488, 1204991320660, 2628810554176, 5730295148952, 12480957518212, 27163290056278]

cp's OEIS Frontend

A274965 G.f. A(x) satisfies: 1 = ...(((((A(x) - x)^(1/2) - x^2)^(1/2) - x^3)^(1/2) - x^4)^(1/2) - x^5)^(1/2) -...- x^n)^(1/2) -..., an infinite series of nested square roots.

Table of values

List of values