Convolution of Fibonacci numbers and A001950.

Terms

a(0) =2a(1) =7a(2) =16a(3) =33a(4) =62a(5) =110a(6) =190a(7) =320a(8) =533a(9) =879a(10) =1440a(11) =2350a(12) =3824a(13) =6210a(14) =10073a(15) =16324a(16) =26441a(17) =42812a(18) =69302a(19) =112166a(20) =181522a(21) =293745a(22) =475327a(23) =769134a(24) =1244526a(25) =2013728a(26) =3258324a(27) =5272125a(28) =8530524