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 A051299 #12 Jul 25 2024 18:18:05 %S A051299 1,2,4,8,16,77,154,695,1651,8162,9790,17699,94690,141599,557590, %T A051299 1133495,2468446,7152908,8681995,15501953,70521484,75736331,133099648, %U A051299 464096129,1105057423,2155631654,3711948196,10831430159,19145731750,110603049251,216633541762 %N A051299 a(n) = a(n-1) + rotate( a(n-1), 1 digit left), a(1) = 1. %t A051299 NestList[#+FromDigits[RotateLeft[IntegerDigits[#]]]&,1,40] (* _Harvey P. Dale_, Jun 29 2017 *) %Y A051299 Cf. A051300. %K A051299 nonn,base,easy %O A051299 1,2 %A A051299 Armand Turpel armandt(AT)unforgettable.com %E A051299 More terms from _Harvey P. Dale_, Jun 29 2017