a(0) = 9; for n>0, a(n) is determined by the rule that the concatenation of the leading terms of the difference triangle is the same as the concatenation of the digits of the sequence.

A125004

a(0) = 9; for n>0, a(n) is determined by the rule that the concatenation of the leading terms of the difference triangle is the same as the concatenation of the digits of the sequence.

Terms

    a(0) =9a(1) =10a(2) =11a(3) =13a(4) =18a(5) =30a(6) =59a(7) =129a(8) =299a(9) =717a(10) =1741a(11) =4183a(12) =9781a(13) =22123a(14) =48516a(15) =103856a(16) =218683a(17) =455839a(18) =944616a(19) =1950404a(20) =4016865a(21) =8257883a(22) =16962086a(23) =34853986a(24) =71735687a(25) =148017585a(26) =306239910a(27) =634872376a(28) =1316958592a(29) =2728411246

External references