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 A030622 #9 Mar 28 2020 19:21:05 %S A030622 24,81,63,26,41,28,25,65,12,10,24,20,48,40,96,81,92,16,38,43,27,68,65, %T A030622 53,61,31,7,22,62,14,45,24,28,81,4,85,76,20,97,15,24,19,43,4,83,88,60, %U A030622 81,67,77,21,63,35,54,43,26,71,8,86,41,34,21,77,28,26,84,35,45,65 %N A030622 Powers of 2 grouped in pairs of two digits (version 1). %C A030622 When a 0 occurs as the most significant digit of the pair, it is simply ignored, e.g., "07" becomes just 7. The following pairs are unaffected. - _Alonso del Arte_, Mar 28 2020 %e A030622 The first few powers of 2 corresponding to positive exponents are 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048. The digits are 2, 4, 8, 1, 6, 3, 2, 6, 4, 1, 2, 8, 2, 5, 6, 5, 1, 2, 1,0, 2, 4, 2, 0, 4, 8. Grouping them in pairs, we obtain 24, 81, 63, 26, 41, 28, 25, 65, 12, 10, 24, 20, 48. %t A030622 FromDigits/@Partition[Flatten[IntegerDigits[2^Range[32]]], 2] (* _Alonso del Arte_, Mar 28 2020 *) %o A030622 (Scala) (List.fill(32)(2: BigInt)).scanLeft(1: BigInt)(_ * _).filter(_ > 1).map(_.toString.toCharArray).flatten.sliding(2, 2).map(_.toArray).toList.map(new String(_)).map(Integer.parseInt(_)) // _Alonso del Arte_, Mar 28 2020 %Y A030622 Cf. A030623, A030624, A000079, A000455. %K A030622 nonn,base,easy %O A030622 1,1 %A A030622 Alexei Kozlowski (bros(AT)spf.minsk.by) %E A030622 More terms from Douglas Winston (douglas.winston(AT)srupc.com), Nov 06 2003