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 A008572 #24 Mar 23 2025 03:56:42 %S A008572 1,1,2,1,4,4,1,7,2,8,2,0,7,3,6,2,4,8,8,3,2,2,9,8,5,9,8,4,3,5,8,3,1,8, %T A008572 0,8,4,2,9,9,8,1,6,9,6,5,1,5,9,7,8,0,3,5,2,6,1,9,1,7,3,6,4,2,2,4,7,4, %U A008572 3,0,0,8,3,7,0,6,8,8,8,9,1,6,1,0,0,4,4,8,2,5,6,1,0,6,9,9,3,2,0 %N A008572 Digits of powers of 12. %C A008572 The constant whose decimal expansion is this sequence is irrational (Mahler, 1981). - _Amiram Eldar_, Mar 23 2025 %H A008572 Seiichi Manyama, <a href="/A008572/b008572.txt">Rows n = 0..100, flattened</a> %H A008572 Kurt Mahler, <a href="https://doi.org/10.1016/0022-314X(81)90010-X">On some irrational decimal fractions</a>, Journal of Number Theory, Vol. 13, No. 2 (1981), pp. 268-269. %e A008572 Triangle begins: %e A008572 1; %e A008572 1, 2; %e A008572 1, 4, 4; %e A008572 1, 7, 2, 8; %e A008572 2, 0, 7, 3, 6; %e A008572 2, 4, 8, 8, 3, 2; %e A008572 2, 9, 8, 5, 9, 8, 4; %e A008572 ... %t A008572 Flatten[IntegerDigits/@(12^Range[0,15])] (* _Harvey P. Dale_, Dec 19 2011 *) %Y A008572 Cf. A001021. %Y A008572 Cf. A000455, A008564, A008565, A008566, A008567, A008568, A008569, A008570, A008571, A008573, A010054. %K A008572 nonn,base,easy,tabf %O A008572 0,3 %A A008572 _N. J. A. Sloane_