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 A169659 #4 Apr 12 2012 11:40:44 %S A169659 1,3,1,7,2,1,18,5,2,1,37,10,4,2,1,85,23,9,4,2,1,171,46,18,8,4,2,1,364, %T A169659 98,38,17,8,4,2,1,736,198,77,34,16,8,4,2,1,1513,407,158,70,33,16,8,4, %U A169659 2,1,3027,814,316,140,66,32,16,8,4,2,1,6168,1659,644,285,134,65,32,16,8,4 %N A169659 Triangle T(n,k) read by rows. Matrix inverse of A174820. %e A169659 Table begins: %e A169659 ...1 %e A169659 ...3....1 %e A169659 ...7....2....1 %e A169659 ..18....5....2....1 %e A169659 ..37...10....4....2....1 %e A169659 ..85...23....9....4....2....1 %e A169659 .171...46...18....8....4....2....1 %e A169659 .364...98...38...17....8....4....2....1 %e A169659 .736..198...77...34...16....8....4....2....1 %e A169659 1513..407..158...70...33...16....8....4....2....1 %e A169659 3027..814..316..140...66...32...16....8....4....2....1 %e A169659 6168.1659..644..285..134...65...32...16....8....4....2....1 %Y A169659 Cf. A174820, A074587. %K A169659 nonn,tabl %O A169659 1,2 %A A169659 Mats Granvik, _Paul D. Hanna_, Apr 05 2010