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a(n) is the smallest number whose name in Bengali has n letters, or -1 if no such word exists.
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%I #19 Mar 31 2024 01:08:33

%S 1,11,29,39,111,129,139,1029,1039,1111,1129,1139,11139,29139,39139

%N a(n) is the smallest number whose name in Bengali has n letters, or -1 if no such word exists.

%K nonn,word,more

%O 2,2

%A _Aritra Mitra_, Apr 19 2022