Iccanobirt sequence: a(n) = R(a(n-1)) + R(a(n-2)) + R(a(n-3)) where a(1)=a(2)=a(3)=1 and R(n) (A004086) is the reverse of n.

A074861

Iccanobirt sequence: a(n) = R(a(n-1)) + R(a(n-2)) + R(a(n-3)) where a(1)=a(2)=a(3)=1 and R(n) (A004086) is the reverse of n.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =3a(4) =5a(5) =9a(6) =17a(7) =85a(8) =138a(9) =960a(10) =958a(11) =1759a(12) =10499a(13) =109831a(14) =247873a(15) =617044a(16) =958359a(17) =1773317a(18) =8528346a(19) =14525888a(20) =102424570a(21) =170715000a(22) =164793813a(23) =394338733a(24) =656748025a(25) =1177078610a(26) =1027388860a(27) =1378392568a(28) =9510483643a(29) =12805616091

External references