For a positive number k, let L(k) denote the list consisting of k followed by the prime factors of k, with repetition, in nondecreasing order; sequence gives composite k such that the digits of L(k) are in nondecreasing order.

A372029

For a positive number k, let L(k) denote the list consisting of k followed by the prime factors of k, with repetition, in nondecreasing order; sequence gives composite k such that the digits of L(k) are in nondecreasing order.

Terms

    a(0) =12a(1) =25a(2) =35a(3) =111a(4) =112a(5) =125a(6) =222a(7) =245a(8) =333a(9) =335a(10) =445a(11) =1225a(12) =2225a(13) =11125a(14) =33445a(15) =334445a(16) =3333335a(17) =3334445a(18) =3444445a(19) =33333445a(20) =333333335a(21) =334444445a(22) =3333333335a(23) =33333334445a(24) =333333333335

External references