cp's OEIS Frontend

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.

A362446 Concatenate the terms of A027750 (omitting spaces and commas), chop into blocks of length 5, then omit any leading zeros.

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%I A362446 #23 Aug 04 2024 16:55:15
%S A362446 11213,12415,12361,71248,13912,51011,11234,61211,31271,41351,51248,
%T A362446 16117,12369,18119,12451,2013,72112,11221,23123,46812,24152,51213,
%U A362446 26139,27124,71428,12912,35610,15301,31124,81632,13113,31217,34157,35123,46912,18361,37121,93813
%N A362446 Concatenate the terms of A027750 (omitting spaces and commas), chop into blocks of length 5, then omit any leading zeros.
%C A362446 Marginal; included only because it appears in a well-known book of puzzles.
%C A362446 In the first 2,500 terms, only one term appears more than 8 times -- 12346 appears 14 times. - _Harvey P. Dale_, Aug 04 2024
%D A362446 GCHQ, The GCHQ Puzzle Book, Penguin, 2016. See pages 119 and 318.
%H A362446 Harvey P. Dale, <a href="/A362446/b362446.txt">Table of n, a(n) for n = 1..2500</a>
%t A362446 FromDigits/@Partition[Flatten[Table[Flatten[IntegerDigits/@Divisors[n]],{n,40}]],5] (* _Harvey P. Dale_, Aug 04 2024 *)
%o A362446 (Python)
%o A362446 from sympy import divisors
%o A362446 from itertools import chain, count, islice
%o A362446 def dgen():
%o A362446     for n in count(1): yield from "".join(map(str, divisors(n)))
%o A362446 def agen(): # generator of terms
%o A362446     g = dgen()
%o A362446     yield from (int("".join(islice(g, 5))) for n in count(1))
%o A362446 print(list(islice(agen(), 38))) # _Michael S. Branicky_, Apr 23 2023
%Y A362446 Cf. A027750.
%K A362446 nonn,base,less
%O A362446 1,1
%A A362446 _N. J. A. Sloane_, Apr 22 2023