This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A102119 #8 Dec 19 2015 00:27:24 %S A102119 0,0,1,1,2,4,7,31,24,26,36,401,994,8541,9369,90481,803101,122309, %T A102119 918349,6691411,1892158,8837259,38317811,15086655,45813926,46917727, %U A102119 407993841,224348715,25411507,629951893,2286023711,6507846892,9250302919 %N A102119 Iccanobirt numbers (9 of 15): a(n) = R(a(n-1) + a(n-2) + R(a(n-3))), where R is the digit reversal function A004086. %C A102119 Digit reversal variation of tribonacci numbers A000073. %C A102119 Inspired by Iccanobif numbers: A001129, A014258-A014260. %F A102119 a(n) = A004086(A102111(n)). %t A102119 R[n_]:=FromDigits[Reverse[IntegerDigits[n]]];Clear[a];a[0]=0;a[1]=0;a[2]=1;a [n_]:=a[n]=R[a[n-1]+a[n-2]+R[a[n-3]]];Table[a[n], {n, 0, 40}] %Y A102119 Cf. A102111-A102125. %K A102119 nonn,base,easy %O A102119 0,5 %A A102119 _Jonathan Vos Post_ and _Ray Chandler_, Dec 30 2004