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 A278910 #13 Sep 08 2022 08:46:18 %S A278910 0,1,1,2,3,2,3,5,9,3,4,7,20,25,4,5,9,35,83,65,5,6,11,54,195,326,161,6, %T A278910 7,13,77,379,1027,1217,385,7,8,15,104,653,2504,5123,4376,897,8,9,17, %U A278910 135,1035,5189,15629,24579,15311,2049,9,10,19,170,1543,9610,38885,93754,114691,52490,4609,10 %N A278910 Triangle of order m: C(n,k) = k*(n-k+1)^(k+m)+n-k, 0 <= k <= n, m = 0, read by rows. %e A278910 As an infinite triangular array: %e A278910 0 %e A278910 1 1 %e A278910 2 3 2 %e A278910 3 5 9 3 %e A278910 4 7 20 25 4 %e A278910 5 9 35 83 65 5 %e A278910 As an infinite square array (matrix): %e A278910 0 1 2 3 4 5 %e A278910 1 3 9 25 65 161 %e A278910 2 5 20 83 326 1217 %e A278910 3 7 35 195 1027 5123 %e A278910 4 9 54 379 2504 15629 %e A278910 5 11 77 653 5189 38885 %p A278910 A278910 := proc(n,k) %p A278910 k*(n-k+1)^k+n-k ; %p A278910 end proc: %p A278910 seq(seq(A278910(n,k),k=0..n),n=0..10) ; # _R. J. Mathar_, Dec 02 2016 %o A278910 (Magma) /* As triangle */ [[k*(n-k+1)^k+n-k: k in [0..n]]: n in [0..10]]; %Y A278910 Cf. A002064. %Y A278910 Cf. Triangles of order m: A003056 (m = -k), A059036 (m = 1-k). %K A278910 nonn,tabl,easy %O A278910 0,4 %A A278910 _Juri-Stepan Gerasimov_, Nov 30 2016