Numbers k such that k and k+1 are both in A363457.

Terms

a(0) =1a(1) =54a(2) =242883a(3) =246962a(4) =261643a(5) =266001a(6) =353893a(7) =380287a(8) =425818a(9) =457055a(10) =542950a(11) =581942a(12) =595440a(13) =831264a(14) =917311a(15) =980235a(16) =1256341a(17) =1719654a(18) =6239931a(19) =8237549a(20) =8378312a(21) =10995744a(22) =11650985a(23) =15123420a(24) =15194370a(25) =15442721a(26) =19628056a(27) =20034738a(28) =20308106a(29) =26218271