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A158264 Table where row n lists the coefficients in the (2^n)-th iteration of x+x^2 for n>=0, read by antidiagonals not including trailing zeros in rows.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 2
5 1
6 4
7 2
8 1
9 8
10 12
11 1
12 1
13 16
14 56
15 30
16 1
17 32
18 240
19 364
20 64
21 1
22 64
23 992
24 3480
25 2240
26 118
27 1
28 128
29 4032
30 30256
31 49280
32 13188
33 188
34 1
35 256
36 16256
37 252000
38 912640
39 685160
40 74760
41 258
42 1
43 512
44 65280
45 2056384
46 15665664
47 27297360
48 9383248
49 409836
50 302
51 1

List of values

[1, 1, 1, 1, 2, 1, 4, 2, 1, 8, 12, 1, 1, 16, 56, 30, 1, 32, 240, 364, 64, 1, 64, 992, 3480, 2240, 118, 1, 128, 4032, 30256, 49280, 13188, 188, 1, 256, 16256, 252000, 912640, 685160, 74760, 258, 1, 512, 65280, 2056384, 15665664, 27297360, 9383248, 409836, 302, 1]