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 A299282 #19 Apr 23 2023 13:06:41 %S A299282 1,7,26,67,139,253,419,643,931,1295,1749,2299,2947,3705,4591,5611, %T A299282 6763,8059,9521,11155,12955,14933,17115,19507,22099,24903,27949,31243, %U A299282 34771,38545,42599,46939,51547,56435,61641,67171,73003,79149,85651,92515,99715,107263,115205 %N A299282 Partial sums of A299281. %H A299282 Colin Barker, <a href="/A299282/b299282.txt">Table of n, a(n) for n = 0..1000</a> %H A299282 <a href="/index/Rec#order_08">Index entries for linear recurrences with constant coefficients</a>, signature (4,-8,12,-14,12,-8,4,-1). %F A299282 From _Colin Barker_, Feb 14 2018: (Start) %F A299282 G.f.: (1 + x)*(1 + x^2 + x^3)*(1 + 2*x + 3*x^2 + x^4 - 2*x^5 + x^6) / ((1 - x)^4*(1 + x^2)^2). %F A299282 a(n) = 4*a(n-1) - 8*a(n-2) + 12*a(n-3) - 14*a(n-4) + 12*a(n-5) - 8*a(n-6) + 4*a(n-7) - a(n-8) for n>8. (End) %F A299282 a(n) = (n*(6*n^2 + 9*n + 11) - 12 + (n - 8)*A056594(n) - (n + 1)*A056594(n+1))/4 for n > 2. - _Stefano Spezia_, Apr 23 2023 %o A299282 (PARI) Vec((1 + x)*(1 + x^2 + x^3)*(1 + 2*x + 3*x^2 + x^4 - 2*x^5 + x^6) / ((1 - x)^4*(1 + x^2)^2) + O(x^70)) \\ _Colin Barker_, Feb 14 2018 %Y A299282 Cf. A056594, A299281. %Y A299282 The 28 uniform 3D tilings: cab: A299266, A299267; crs: A299268, A299269; fcu: A005901, A005902; fee: A299259, A299265; flu-e: A299272, A299273; fst: A299258, A299264; hal: A299274, A299275; hcp: A007899, A007202; hex: A005897, A005898; kag: A299256, A299262; lta: A008137, A299276; pcu: A005899, A001845; pcu-i: A299277, A299278; reo: A299279, A299280; reo-e: A299281, A299282; rho: A008137, A299276; sod: A005893, A005894; sve: A299255, A299261; svh: A299283, A299284; svj: A299254, A299260; svk: A010001, A063489; tca: A299285, A299286; tcd: A299287, A299288; tfs: A005899, A001845; tsi: A299289, A299290; ttw: A299257, A299263; ubt: A299291, A299292; bnn: A007899, A007202. See the Proserpio link in A299266 for overview. %K A299282 nonn,easy %O A299282 0,2 %A A299282 _N. J. A. Sloane_, Feb 10 2018