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 A084903 #18 Jul 30 2023 14:31:54 %S A084903 1,9,44,170,576,1792,5248,14688,39680,104192,267264,672256,1662976, %T A084903 4055040,9764864,23257088,54853632,128253952,297533440,685375488, %U A084903 1568669696,3569352704,8078229504,18192793600,40785412096,91049951232 %N A084903 Binomial transform of positive cubes. %H A084903 <a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (8,-24,32,-16). %F A084903 a(n) = 2^(n-3)*(n^3+9n^2+18n+8). %F A084903 a(n) = Sum_{k=0..n} C(n, k)*(1+k)^3. %F A084903 O.g.f.: (x-1)*(2*x^2-2*x-1)/(-1+2*x)^4. - _R. J. Mathar_, Apr 02 2008 %F A084903 a(n) = A058649(n+1)/n. [_Gary Detlefs_, Nov 26 2011] %t A084903 LinearRecurrence[{8,-24,32,-16},{1,9,44,170},30] (* _Harvey P. Dale_, Jul 30 2023 *) %o A084903 (PARI) a(n) = sum(k=0, n, binomial(n, k)*(1+k)^3); \\ _Michel Marcus_, Oct 13 2016 %Y A084903 Cf. A000578, A058645. %K A084903 easy,nonn %O A084903 0,2 %A A084903 _Paul Barry_, Jun 13 2003