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 A348774 #15 Jun 01 2022 17:41:46 %S A348774 2,6,12,18,24,32,42,48,60,68,74,84,98,104,110,128,138,150,158,168,180, %T A348774 192,198,212,228,234,242,258,270,278,284,308,314,332,348,354,368,380, %U A348774 390,402,420,432,440,450,462,468,488,500,510,524,548,564,572,588,600,608,618,632,644,654 %N A348774 A348773(2*n+1). %C A348774 The first differences are 4, 6, 6, 6, 8, ... and apart from the initial term4, appears to coincide with A155067, the differences between successive odd-indexed primes. If confirmed, this will be one of the few formulas known for A307720. %C A348774 The other bisection of A348773, A348775, seems much more mysterious. %H A348774 N. J. A. Sloane, <a href="/A348774/b348774.txt">Table of n, a(n) for n = 0..613</a> %Y A348774 Cf. A155067, A307720, A307730, A307632, A348773, A348775. %K A348774 nonn %O A348774 0,1 %A A348774 _N. J. A. Sloane_, Nov 07 2021