a(n) = a(n-1) + a(n-2)*a(n-3) + a(n-4)*a(n-5)^a(n-6); initial terms are 0, 0, 0, 1, 1, 1.
A171880
a(n) = a(n-1) + a(n-2)*a(n-3) + a(n-4)*a(n-5)^a(n-6); initial terms are 0, 0, 0, 1, 1, 1.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =1a(4) =1a(5) =1a(6) =2a(7) =4a(8) =7a(9) =16a(10) =46a(11) =166a(12) =1014a(13) =47066a(14) =12348246366
External references
- oeis: A171880