This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A061114 #15 Jul 02 2025 16:02:01
%S A061114 1,12,125,12515,1251552,1251552203,1251552203877,12515522038774140,
%T A061114 1251552203877414021147,1251552203877414021147115975,
%U A061114 1251552203877414021147115975678570
%N A061114 Concatenation of first n Bell numbers (starting with A000110(1)).
%C A061114 A000110(0) is omitted here in contrast to A132938. - _Georg Fischer_, Dec 29 2022
%D A061114 Amarnath Murthy, Generalization of Partition function, introducing Smarandache Factor partition, Smarandache Notions Journal, Vol. 11, No. 1-2-3, Spring 2000.
%D A061114 Amarnath Murthy, A general result on the Smarandache Star function, Smarandache Notions Journal, Vol. 11, No. 1-2-3, Spring 2000.
%D A061114 Amarnath Murthy, Properties of Smarandache Star Triangle, Smarandache Notions Journal, Vol. 11, No. 1-2-3, Spring 2000.
%e A061114 a(5) = 1251552, since 1, 2, 5, 15, 52 are the first five bell numbers.
%p A061114 with(combinat, bell): for n from 1 to 20 do for k from 1 to n do printf(`%d`, bell(k)) od: printf(`,`): od:
%t A061114 Module[{nn=20,bn},bn=BellB[Range[nn]];Table[FromDigits[ Flatten[ IntegerDigits/@ Take[bn,n]]],{n,nn}]] (* _Harvey P. Dale_, Aug 02 2016 *)
%Y A061114 Cf. A000110, A132938.
%K A061114 nonn,base,less
%O A061114 1,2
%A A061114 _Amarnath Murthy_, Apr 21 2001
%E A061114 More terms from _James Sellers_, Apr 23 2001
%E A061114 Definition amended by _Georg Fischer_, Dec 29 2022