A171877 a(n) = a(n-1) + a(n-2)*a(n-3) + a(n-4)^a(n-5)

0, 0, 1, 1, 1, 3, 5, 9, 25, 73, 423, 61297, 3814697357801, 38288777744833624093154249190851262684887027625

Offset

0,6

Comments

First 5 terms are {0,0,1,1,1}; thereafter apply the recurrence. Note that 0^0=1.

Links

Table of n, a(n) for n=0..13.

R. Munafo, Accelerating Sequences

Crossrefs

Sequence in context: A114001 A306838 A171879 * A339068 A004044 A192152

Adjacent sequences: A171874 A171875 A171876 * A171878 A171879 A171880

Keyword

nonn

Author

Robert Munafo, Jan 21 2010

Status

approved