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 A265083 #13 Aug 10 2025 02:48:51
%S A265083 0,3,12,51,192,675,2358,8043,26736,88659,290910,941985,3046068,
%T A265083 9791613,31221414,99466515,315677664,996398883,3143147598,9888728505,
%U A265083 30988353300,97066250379,303448558578,945804661377,2946961001304,9168357598425,28456994858058,88302639334743
%N A265083 Column 3 of array in A265080.
%H A265083 Andrew Howroyd, <a href="/A265083/b265083.txt">Table of n, a(n) for n = 0..500</a>
%H A265083 D. R. L. Brown, <a href="https://ia.cr/2015/375">Bounds on surmising remixed keys</a>, IACR, Report 2015/375, 2015-2016. See Table 1.
%F A265083 E.g.f.: Sum_{j>=0} (exp(x)^3 - (Sum_{i=0..j} x^i/i!)^3). - _Andrew Howroyd_, Aug 09 2025
%o A265083 (PARI) seq(n)={Vec(serlaplace(sum(j=0, n, exp(3*x + O(x*x^n)) - sum(i=0, j, x^i/i!, O(x*x^n))^3)), -n-1)} \\ _Andrew Howroyd_, Aug 09 2025
%Y A265083 Cf. A265080.
%K A265083 nonn
%O A265083 0,2
%A A265083 _N. J. A. Sloane_, Jan 01 2016
%E A265083 a(6) onwards from _Andrew Howroyd_, Aug 09 2025