A293518 - cp's OEIS frontend

A293518 Number of surviving even nodes at generation n in the binary tree of persistently squarefree numbers (see A293230).

n	a(n)
0	0
1	1
2	1
3	2
4	2
5	2
6	3
7	6
8	6
9	8
10	12
11	16
12	20
13	31
14	34
15	56
16	63
17	88
18	112
19	150
20	208
21	287
22	379
23	511
24	690
25	908
26	1239
27	1637
28	2252
29	2945
30	4052
31	5348
32	7203
33	9681
34	12974
35	17432
36	23470
37	31419
38	42254
39	57026
40	76182
41	102845
42	137764
43	185271
44	249065
45	334864
46	449586
47	604164
48	811709
49	1089661
50	1465433
51	1968592

[0, 1, 1, 2, 2, 2, 3, 6, 6, 8, 12, 16, 20, 31, 34, 56, 63, 88, 112, 150, 208, 287, 379, 511, 690, 908, 1239, 1637, 2252, 2945, 4052, 5348, 7203, 9681, 12974, 17432, 23470, 31419, 42254, 57026, 76182, 102845, 137764, 185271, 249065, 334864, 449586, 604164, 811709, 1089661, 1465433, 1968592]

cp's OEIS Frontend

A293518 Number of surviving even nodes at generation n in the binary tree of persistently squarefree numbers (see A293230).

Table of values

List of values