Numbers k such that T(k) = T(A072522(k)) + T(A072522(k+1)), T(i) being the triangular numbers.

Terms

a(0) =6a(1) =8a(2) =11a(3) =16a(4) =46a(5) =73a(6) =856a(7) =1238a(8) =1493a(9) =1731a(10) =1931a(11) =2193a(12) =2713a(13) =3238a(14) =4006a(15) =4648a(16) =4781a(17) =5534a(18) =6240a(19) =6458a(20) =7793a(21) =9039a(22) =9491a(23) =11456a(24) =13290a(25) =16041a(26) =21388a(27) =24439a(28) =25449a(29) =30327