Step |
Hyp |
Ref |
Expression |
1 |
|
oveq2 |
|
2 |
1
|
eleq1d |
|
3 |
2
|
imbi2d |
|
4 |
|
oveq2 |
|
5 |
4
|
eleq1d |
|
6 |
5
|
imbi2d |
|
7 |
|
oveq2 |
|
8 |
7
|
eleq1d |
|
9 |
8
|
imbi2d |
|
10 |
|
oveq2 |
|
11 |
10
|
eleq1d |
|
12 |
11
|
imbi2d |
|
13 |
|
pell14qrre |
|
14 |
13
|
recnd |
|
15 |
14
|
exp0d |
|
16 |
|
pell14qrne0 |
|
17 |
14 16
|
dividd |
|
18 |
15 17
|
eqtr4d |
|
19 |
|
pell14qrdivcl |
|
20 |
19
|
3anidm23 |
|
21 |
18 20
|
eqeltrd |
|
22 |
14
|
3ad2ant2 |
|
23 |
|
simp1 |
|
24 |
22 23
|
expp1d |
|
25 |
|
simp2l |
|
26 |
|
simp3 |
|
27 |
|
simp2r |
|
28 |
|
pell14qrmulcl |
|
29 |
25 26 27 28
|
syl3anc |
|
30 |
24 29
|
eqeltrd |
|
31 |
30
|
3exp |
|
32 |
31
|
a2d |
|
33 |
3 6 9 12 21 32
|
nn0ind |
|
34 |
33
|
expdcom |
|
35 |
34
|
3imp |
|