Numbers k such that k and k+1 are both terms in A377385.

Terms

a(0) =1a(1) =1224a(2) =126191a(3) =428519a(4) =649727a(5) =1015416a(6) =1988064a(7) =3425856a(8) =4542740a(9) =4574240a(10) =4743900a(11) =4813668a(12) =5131008a(13) =6899840a(14) =7001315a(15) =7172424a(16) =7356096a(17) =8020583a(18) =10206000a(19) =11146421a(20) =11566800a(21) =11597999a(22) =11693807a(23) =12556700a(24) =13742624a(25) =13745759a(26) =13831487a(27) =14365120a(28) =16939799a(29) =20561400