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A065004 as a simple table

n a(n)
1 1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111
2 1100100
3 10201
4 1210
5 400
6 244
7 202
8 144
9 121
10 100
11 91
12 84
13 79
14 72
15 -1
16 64
17 -1
18 -1
19 55
20 50
21 -1
22 -1
23 48
24 44
25 40
26 -1
27 -1
28 -1
29 -1
30 -1
31 37
32 34
33 31
34 -1
35 -1
36 -1
37 -1
38 -1
39 -1
40 -1
41 -1
42 -1
43 -1
44 -1
45 -1
46 28
47 26
48 24
49 22
50 20
51 -1
52 -1
53 -1
54 -1
55 -1
56 -1
57 -1
58 -1
59 -1
60 -1
61 -1
62 -1
63 -1
64 -1
65 -1
66 -1
67 -1
68 -1
69 -1
70 -1
71 -1
72 -1
73 -1
74 -1
75 -1
76 -1
77 -1
78 -1
79 -1
80 -1
81 -1
82 -1
83 -1
84 -1
85 -1
86 -1
87 -1
88 -1
89 -1
90 -1
91 19
92 18
93 17
94 16
95 15
96 14
97 13
98 12
99 11
100 10

[1111111111111111111111111111111111111111111111111\
 11111111111111111111111111111111111111111111111111\
 1,1100100,10201,1210,400,244,202,144,121,100,91,
 84,79,72,-1,64,-1,-1,55,50,-1,-1,48,44,40,-1,-1,
 -1,-1,-1,37,34,31,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
 -1,-1,28,26,24,22,20,-1,-1,-1,-1,-1,-1,-1,-1,-1,
 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,19,
 18,17,16,15,14,13,12,11,10]

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Last modified March 7 13:24 EST 2021. Contains 341886 sequences. (Running on oeis4.)