OFFSET
1,2
COMMENTS
a(6) has 121 digits. a(n) modulo 2 gives the pattern 1,0,0,1,1,0,0,1,1...
FORMULA
a(n) = a(n-1)^n+n-1.
EXAMPLE
a(4) = a(3)^4+3 = 10^4+3 = 10003.
MATHEMATICA
RecurrenceTable[{a[1]==1, a[n]==a[n-1]^n+n-1}, a[n], {n, 6}] (* Harvey P. Dale, Oct 17 2011 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Avik Roy (avik_3.1416(AT)yahoo.co.in), Jan 26 2009
STATUS
approved