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 A086350 #7 May 08 2022 22:53:07 %S A086350 1,1,1,1,2,2,1,3,5,2,1,4,10,12,4,1,5,17,34,29,4,1,6,26,74,116,70,8,1, %T A086350 7,37,138,325,396,169,8,1,8,50,232,740,1432,1352,408,16,1,9,65,362, %U A086350 1469,3988,6317,4616,985,16,1,10,82,534,2644,9354,21544,27878,15760,2378,32 %N A086350 Square array of Pell related numbers, read by antidiagonals. %C A086350 Rows include A016116, A000129, A007052, A086351. Main diagonal is A086352. Rows are successive binomial transforms of (1, 1, 2, 2, 4, 4, ...). %F A086350 T(n, k) = ((1+sqrt(2))(k+sqrt(2))^n-(1-sqrt(2))(k-sqrt(2))^n)/(sqrt(8)). %e A086350 Rows start %e A086350 1 1 2 2 4 ... %e A086350 1 2 5 12 29 ... %e A086350 1 3 10 34 116 ... %e A086350 1 4 17 74 325 ... %e A086350 1 5 26 138 740 ... %Y A086350 Cf. A016116, A000129, A007052, A086351, A086352. %K A086350 easy,nonn,tabl %O A086350 0,5 %A A086350 _Paul Barry_, Jul 18 2003