login

A248954 as a simple table

na(n)
11
22
33
44
55
66
77
88
99
1011
1122
1233
1344
1455
1566
1677
1788
1899
19111
20142
21214
22222
23284
24333
25421
26428
27444
28555
29666
30777
31842
32888
33999
341111
351142
361212
371242
381346
391421
401422
411442
422114
432121
442124
452142
462144
472214
482222
492284
502421
512424
522484
532842
542844

[1,2,3,4,5,6,7,8,9,11,22,33,44,55,66,77,88,99,111,
 142,214,222,284,333,421,428,444,555,666,777,842,
 888,999,1111,1142,1212,1242,1346,1421,1422,1442,
 2114,2121,2124,2142,2144,2214,2222,2284,2421,2424,
 2484,2842,2844]