1-sequence of reduction of (3n-2) by x^2 -> x+1.

Terms

a(0) =0a(1) =4a(2) =11a(3) =31a(4) =70a(5) =150a(6) =302a(7) =588a(8) =1113a(9) =2065a(10) =3770a(11) =6796a(12) =12124a(13) =21444a(14) =37655a(15) =65715a(16) =114078a(17) =197122a(18) =339242a(19) =581740a(20) =994405a(21) =1694949a(22) =2881586a(23) =4887576a(24) =8272440a(25) =13974340a(26) =23564387a(27) =39670663a(28) =66684598a(29) =111936750