OFFSET
1,2
LINKS
Eric Weisstein's World of Mathematics, Partition
Eric Weisstein's World of Mathematics, Partition Function P
EXAMPLE
n=8, the 8th partition number is 22: three (5+3, 5+2+1 and 5+1+1+1) do not count, as 5 = '101', therefore a(8)=19.
CROSSREFS
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Oct 02 2003
STATUS
approved