A061114 Concatenation of first n Bell numbers (starting with A000110(1)).

1, 12, 125, 12515, 1251552, 1251552203, 1251552203877, 12515522038774140, 1251552203877414021147, 1251552203877414021147115975, 1251552203877414021147115975678570

Offset

1,2

Comments

A000110(0) is omitted here in contrast to A132938. - Georg Fischer, Dec 29 2022

References

Amarnath Murthy, Generalization of Partition function, introducing Smarandache Factor partition, Smarandache Notions Journal, Vol. 11, No. 1-2-3, Spring 2000.

Amarnath Murthy, A general result on the Smarandache Star function, Smarandache Notions Journal, Vol. 11, No. 1-2-3, Spring 2000.

Amarnath Murthy, Properties of Smarandache Star Triangle, Smarandache Notions Journal, Vol. 11, No. 1-2-3, Spring 2000.

Links

Table of n, a(n) for n=1..11.

Example

a(5) = 1251552, since 1, 2, 5, 15, 52 are the first five bell numbers.

Maple

with(combinat, bell): for n from 1 to 20 do for k from 1 to n do printf(`%d`, bell(k)) od: printf(`, `): od:

Mathematica

Module[{nn=20, bn}, bn=BellB[Range[nn]]; Table[FromDigits[ Flatten[ IntegerDigits/@ Take[bn, n]]], {n, nn}]] (* Harvey P. Dale, Aug 02 2016 *)

Crossrefs

Cf. A000110, A132938.

Sequence in context: A356822 A178626 A223322 * A015792 A343769 A348463

Adjacent sequences: A061111 A061112 A061113 * A061115 A061116 A061117

Keyword

nonn,base,less

Author

Amarnath Murthy, Apr 21 2001

Extensions

More terms from James A. Sellers, Apr 23 2001

Definition amended by Georg Fischer, Dec 29 2022

Status

approved