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 A092283 #12 Jun 24 2017 10:34:09 %S A092283 2,3,6,4,7,12,5,8,13,20,6,9,14,21,30,7,10,15,22,31,42,8,11,16,23,32, %T A092283 43,56,9,12,17,24,33,44,57,72,10,13,18,25,34,45,58,73,90,11,14,19,26, %U A092283 35,46,59,74,91,110,12,15,20,27,36,47,60,75,92,111,132,13,16,21,28,37 %N A092283 Triangular array read by rows: T(n,k)=n+k^2, 1<=k<=n. %C A092283 T(n,n) = A002378(n+1); %C A092283 Sum(T(n,k):1<=k<=n) = A000330(n) + A000290(n). %H A092283 Harvey P. Dale, <a href="/A092283/b092283.txt">Table of n, a(n) for n = 1..1000</a> %e A092283 2 ; %e A092283 3 6 ; %e A092283 4 7 12 ; %e A092283 5 8 13 20; %e A092283 6 9 14 21 30; %e A092283 7 10 15 22 31 42 ; %e A092283 8 11 16 23 32 43 56 ; %e A092283 9 12 17 24 33 44 57 72 ; %e A092283 10 13 18 25 34 45 58 73 90 ; %e A092283 11 14 19 26 35 46 59 74 91 110 ; %t A092283 Table[n+k^2,{n,20},{k,n}]//Flatten (* _Harvey P. Dale_, Jun 24 2017 *) %Y A092283 Cf. A101986 (row sums). %K A092283 nonn,easy,tabl %O A092283 1,1 %A A092283 _Reinhard Zumkeller_, Jan 27 2004