|
| |
|
|
A061306
|
|
Bell Bell numbers: a(n+1) = B(a(n)), where B() are the Bell numbers, A000110.
|
|
1
| | |
|
|
|
OFFSET
| 0,2
|
|
|
COMMENTS
| The next term has 281 digits. [From Harvey P. Dale, Nov 28 2011]
|
|
|
REFERENCES
| Amarnath Murthy, Generalization of Partition Function. Introducing Smarandache Factor Partitions.Smarandache Notions Journal, Vol. 11, No. 1-2-3, Spring 2000.
|
|
|
LINKS
| M. L. Perez et al., eds., Smarandache Notions Journal
|
|
|
EXAMPLE
| a(3) = 52, 5 is the 3rd Bell number and the fifth Bell number is 52.
|
|
|
MAPLE
| with(combinat): for n from 1 to 6 do printf(`%d, `, bell(bell(n))) od:
|
|
|
MATHEMATICA
| BellB[BellB[Range[5]]] (* From Harvey P. Dale, Nov 28 2011 *)
|
|
|
CROSSREFS
| Cf. A000110.
Sequence in context: A080973 A079179 A000654 * A179616 A200087 A139841
Adjacent sequences: A061303 A061304 A061305 * A061307 A061308 A061309
|
|
|
KEYWORD
| nonn,easy
|
|
|
AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Apr 26 2001
|
|
|
EXTENSIONS
| More terms from James A. Sellers (sellersj(AT)math.psu.edu), Sep 26 2001
|
| |
|
|
