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.

A377423 Distinct values of the number of integers between consecutive self numbers (A163139), in order of occurrence.

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%I A377423 #31 Apr 24 2025 13:19:33
%S A377423 1,10,14,27,40,53,66,79,92,105,118,100,117,130,143,156,169,182,195,
%T A377423 208,23,89,203,220,233,246,259,272,285,298,34,78,293,306,323,336,349,
%U A377423 362,375,388,45,67,383,396,409,426,439,452,465,478,56,473,486,499
%N A377423 Distinct values of the number of integers between consecutive self numbers (A163139), in order of occurrence.
%C A377423 Each new value is typically found between self numbers located around 10^k, for some k.
%C A377423 This sequences exhibits interesting patterns, for instance, many new numbers are 13 apart.
%H A377423 Daniel Mondot, <a href="/A377423/b377423.txt">Table of n, a(n) for n = 1..10000</a>
%H A377423 Daniel Mondot, <a href="/A377423/a377423_1.txt">First self number found after a new gap value</a>
%F A377423 a(n) = A377473(n)-1. - _Daniel Mondot_, Apr 17 2025
%e A377423 Between the first 2 self numbers 1 and 3, there is 1 integer. So 1 is in the sequence
%e A377423 The next new gap is between 9 and 20, with 10 integers, so 10 is in the sequence.
%e A377423 The next new gap is between 1006 and 1021, with 14 integers, so 14 is in the sequence.
%Y A377423 Cf. A003052, A163128, A163139, A225793, A230093, A230094, A377422, A377472, A377473.
%K A377423 nonn,base
%O A377423 1,2
%A A377423 _Daniel Mondot_, Oct 27 2024