A171879 a(n) = a(n-1) + a(n-2)*a(n-3) + a(n-4)*a(n-5)^a(n-6)

0, 0, 1, 1, 1, 1, 3, 5, 9, 25, 73, 313, 3263, 1502337, 278472902914281, 11984387434132924341157279996736444304839056033321

Offset

0,7

Comments

First 6 terms are {0,0,1,1,1,1}; thereafter apply the recurrence. Note that 0^0=1.

Links

Table of n, a(n) for n=0..15.

R. Munafo, Accelerating Sequences

Crossrefs

Sequence in context: A039774 A114001 A306838 * A171877 A339068 A004044

Adjacent sequences: A171876 A171877 A171878 * A171880 A171881 A171882

Keyword

nonn

Author

Robert Munafo, Jan 21 2010

Status

approved