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 A146117 #13 Jun 20 2025 10:31:05 %S A146117 1,1,2,5,15,25,14,13,9,6,10,6,4,1,7,23,23,0,22,5,1,15,6,1,15,13,19,10, %T A146117 23,2,24,13,5,4,6,21,10,24,10,19,10,20,14,24,7,23,22,0,6,1,6,22,19,7, %U A146117 5,23,18,13,14,1,15,24,19,15,22,10,1,23,20,24,13,14,22,15,3,1,24,10,10,19,11 %N A146117 Bell numbers (A000110) read mod 27. %H A146117 G. C. Greubel, <a href="/A146117/b146117.txt">Table of n, a(n) for n = 0..10000</a> %H A146117 W. F. Lunnon, P. A. B. Pleasants, and N. M. Stephens, <a href="http://matwbn.icm.edu.pl/ksiazki/aa/aa35/aa3511.pdf">Arithmetic properties of Bell numbers to a composite modulus I</a>, Acta Arithmetica 35 (1979), pp. 1-16. %H A146117 <a href="/index/Rec#order_117">Index entries for linear recurrences with constant coefficients</a>, order 117. %F A146117 a(n+117) = a(n). - _G. C. Greubel_, Feb 02 2016 [See A054767. - _Jianing Song_, Jun 20 2025] %t A146117 Mod[BellB[Range[0, 80]], 27] (* _Harvey P. Dale_, Dec 17 2011 *) %o A146117 (Magma) [Bell(n) mod 27: n in [0..100]]; // _G. C. Greubel_, Feb 02 2016 %Y A146117 Cf. A000110, A146093-A146122 (Bell numbers read mod 3 to mod 32). %Y A146117 Cf. A054767 (periods). %K A146117 nonn %O A146117 0,3 %A A146117 _N. J. A. Sloane_, Feb 07 2009