a(n) = a(n-1) + R(a(n-2)) + R(a(n-3)) where a(0)=a(1)=a(2)=1 and R(k) = A004086(k) is the reverse of k.

A074860

a(n) = a(n-1) + R(a(n-2)) + R(a(n-3)) where a(0)=a(1)=a(2)=1 and R(k) = A004086(k) is the reverse of k.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =3a(4) =5a(5) =9a(6) =17a(7) =31a(8) =111a(9) =195a(10) =319a(11) =1021a(12) =2525a(13) =4639a(14) =11092a(15) =25708a(16) =64083a(17) =173846a(18) =292644a(19) =979061a(20) =2073724a(21) =2680995a(22) =7115676a(23) =17380240a(24) =30136219a(25) =41109707a(26) =136581181a(27) =298634398a(28) =550610143a(29) =1625232666

External references