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%I #8 Dec 19 2015 00:25:03
%S 0,0,1,1,2,4,7,31,42,26,711,761,49,279,8811,1651,44311,38141,55006,
%T 45901,34108,990681,161132,5891031,6129461,8041777,45820251,74839842,
%U 60558487,202825861,635089352,309192535,7549098331,8252802091
%N Iccanobirt numbers (13 of 15): a(n) = R(R(a(n-1)) + a(n-2) + R(a(n-3))), where R is the digit reversal function A004086.
%C Digit reversal variation of tribonacci numbers A000073.
%C Inspired by Iccanobif numbers: A001129, A014258-A014260.
%F a(n) = A004086(A102115(n)).
%t R[n_]:=FromDigits[Reverse[IntegerDigits[n]]];Clear[a];a[0]=0;a[1]=0;a[2]=1;a [n_]:=a[n]=R[R[a[n-1]]+a[n-2]+R[a[n-3]]];Table[a[n], {n, 0, 40}]
%Y Cf. A102111-A102125.
%K nonn,base,easy
%O 0,5
%A _Jonathan Vos Post_ and _Ray Chandler_, Dec 30 2004
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