Numbers n such that triangular numbers T(n), T(n+1) and T(n+2) are 3-almost primes.

A255200

Numbers n such that triangular numbers T(n), T(n+1) and T(n+2) are 3-almost primes.

Terms

    a(0) =17a(1) =28a(2) =41a(3) =281a(4) =2081a(5) =2801a(6) =4721a(7) =5441a(8) =6196a(9) =12161a(10) =12916a(11) =13996a(12) =20476a(13) =24916a(14) =32321a(15) =32441a(16) =34156a(17) =34961a(18) =40036a(19) =56596a(20) =70996a(21) =73361a(22) =94396

External references