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 A141660 #17 Jan 25 2020 02:29:25 %S A141660 1,0,2,0,2,4,0,2,16,8,0,2,44,88,16,0,2,104,528,416,32,0,2,228,2416, %T A141660 4832,1824,64,0,2,480,9528,38656,38112,7680,128,0,2,988,34344,249904, %U A141660 499808,274752,31616,256,0,2,2008,116864,1411744,4998080,5646976,1869824 %N A141660 Triangle read by rows: T(n,k) = 2^k*A123125(n,k). %C A141660 Triangle T(n,k), 0 <= k <= n, read by rows given by [0,1,0,2,0,3,0,4,0,5,0,6,...] DELTA [2,0,4,0,6,0,8,0,10,0,...] where DELTA is the operator defined in A084938. - _Philippe Deléham_, Sep 15 2008 %F A141660 T(n,k) = 2^k*A123125(n,k). - _Philippe Deléham_, Sep 15 2008 %F A141660 Sum_{k=0..n} T(n,k) = A000629(n). - _Philippe Deléham_, Nov 19 2011 %e A141660 {1}, %e A141660 {0, 2}, %e A141660 {0, 2, 4}, %e A141660 {0, 2, 16, 8}, %e A141660 {0, 2, 44, 88, 16}, %e A141660 {0, 2, 104, 528, 416, 32}, %e A141660 {0, 2, 228, 2416, 4832, 1824, 64}, %e A141660 {0, 2, 480, 9528, 38656, 38112, 7680, 128}, ... %Y A141660 Cf. A000629, A123125. %K A141660 nonn,easy,tabl %O A141660 1,3 %A A141660 _Roger L. Bagula_ and _Gary W. Adamson_, Sep 04 2008 %E A141660 Example corrected by _Philippe Deléham_, Oct 16 2008 %E A141660 New name using formula by Philippe Deléham, _Joerg Arndt_, Jan 25 2020