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 A292607 #5 Sep 26 2017 09:46:58 %S A292607 1,1,68,32674,57723632,271473334576,2800120560949568, %T A292607 55651949496456964624,1942583997186585626968832, %U A292607 111073820056887200817614238976,9853491064021356425337726078215168,1298413151833835358460655821358916826624,245239739577111045856575275575622149212434432 %N A292607 Alternating rows sums of A292606. %p A292607 a := proc(n) A292606_row(n); add((-1)^k*%[k+1], k=0..n) end: seq(a(n), n=0..12); %Y A292607 Cf. A292606. %K A292607 nonn %O A292607 0,3 %A A292607 _Peter Luschny_, Sep 26 2017