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.
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]]] (* Harvey P. Dale, Nov 28 2011 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Amarnath Murthy, Apr 26 2001
EXTENSIONS
More terms from James A. Sellers, Sep 26 2001
STATUS
approved