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.

A111107 Lexicographically smallest increasing sequence of primes whose binomial transform consists only of primes.

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%I A111107 #31 Jun 06 2025 18:17:41
%S A111107 2,3,5,11,13,29,43,53,59,71,79,83,103,113,139,173,181,227,269,277,317,
%T A111107 383,463,509,673,701,751,863,967,977,1187,1201,1493,1531,1609,1637,
%U A111107 1801,2153,2221,2239,2371,2377,2543,2557,2683,2687,2791,2837,3067,3229,3257
%N A111107 Lexicographically smallest increasing sequence of primes whose binomial transform consists only of primes.
%C A111107 In the standard binomial transform of the primes most of the terms are composite.
%H A111107 Alois P. Heinz, <a href="/A111107/b111107.txt">Table of n, a(n) for n = 0..2000</a>
%F A111107 a(n) = Sum_{i=0..n} A384676(n-i)*binomial(n,i)*(-1)^i. - _Alois P. Heinz_, Jun 06 2025
%e A111107 The binomial transform of this sequence gives: 2, 5, 13, 37, 101, 271, 727, 1931, 5003, 12547, 30449, 71761, ... = A384676.
%e A111107 The prime 7 and various larger primes are missing from the new sequence because the transform would not consist of primes. For example,
%e A111107   2,5,13,33
%e A111107   3,8,20
%e A111107   5,12
%e A111107   7
%e A111107 and 33 is not prime, so we must eliminate 7.
%Y A111107 Cf. A000040, A007443, A384676.
%K A111107 easy,nonn
%O A111107 0,1
%A A111107 _Daniel Joyce_, Oct 14 2005
%E A111107 Offset set to 0 by _Alois P. Heinz_, Jun 06 2025