OFFSET
1,1
LINKS
C. Caldwell and G. L. Honaker, Jr., Is pi(6521)=6!+5!+2!+1! unique?, Math. Spectrum, 22:2 (2000/2001) 34-36.
FORMULA
EXAMPLE
a(5)=843 because pi(6521)=6!+5!+2!+1!=843.
CROSSREFS
KEYWORD
fini,full,nonn
AUTHOR
STATUS
approved