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 A322777 #20 Aug 21 2025 18:36:42 %S A322777 3,31,1,314,14,4,3141,141,41,31415,1415,415,15,5,314159,14159,4159, %T A322777 159,59,9,3141592,141592,41592,1592,592,92,2,31415926,1415926,415926, %U A322777 15926,5926,926,26,6,314159265,14159265,4159265,159265,59265,9265,265,65,3141592653 %N A322777 Scan first k digits of Pi starting with 3, for k = 1,2,3,..., record all distinct numbers in the order in which they appear. %C A322777 Skip any "numbers" that begin with 0, except 0 itself. %C A322777 Presumably this is a permutation of the nonnegative numbers. %C A322777 All the terms of A011545 appear in order in this sequence. - _Rémy Sigrist_, Jan 03 2019 %H A322777 Rémy Sigrist, <a href="/A322777/b322777.txt">Table of n, a(n) for n = 1..10000</a> %o A322777 (PARI) pid=Pi; s=Set(); for (k=1, 10, my (f=floor(pid)); forstep (w=k, 1, -1, v=f % (10^w); if (!setsearch(s, v), print1 (v ", "); s=setunion(s,Set(v)))); pid*=10) \\ _Rémy Sigrist_, Jan 03 2019 %Y A322777 Inspired by A323036. %Y A322777 Cf. A000796, A011545, A322776, A154883. %K A322777 nonn,base %O A322777 1,1 %A A322777 _N. J. A. Sloane_, Jan 03 2019 %E A322777 More terms from _Rémy Sigrist_, Jan 03 2019