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A072041 as a simple table

n a(n)
0 1
1 0
2 22
3 33
4 44
5 55
6 66
7 77
8 88
9 99
10 1111
11 -1
12 2552
13 -1
14 2662
15 3443
16 2772
17 -1
18 2882
19 -1
20 2992
21 3663
22 -1
23 -1
24 3773
25 5445
26 -1
27 3883
28 4664
29 -1
30 3993
31 -1
32 4774
33 -1
34 -1
35 5665
36 4884
37 -1
38 -1
39 -1
40 4994
41 -1
42 6666
43 -1
44 -1
45 5885
46 -1
47 -1
48 6776
49 7667
50 5995
51 -1
52 -1
53 -1
54 6886

[1,0,22,33,44,55,66,77,88,99,1111,-1,2552,-1,2662,
 3443,2772,-1,2882,-1,2992,3663,-1,-1,3773,5445,-1,
 3883,4664,-1,3993,-1,4774,-1,-1,5665,4884,-1,-1,
 -1,4994,-1,6666,-1,-1,5885,-1,-1,6776,7667,5995,
 -1,-1,-1,6886]

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Last modified November 21 01:33 EST 2019. Contains 329349 sequences. (Running on oeis4.)