a(1)=1. a(n) = the smallest integer > a(n-1) such that d(a(n))+d(a(n)+1) > d(a(n-1))+d(a(n-1)+1), where d(m) = the number of divisors of m.

A175143

a(1)=1. a(n) = the smallest integer > a(n-1) such that d(a(n))+d(a(n)+1) > d(a(n-1))+d(a(n-1)+1), where d(m) = the number of divisors of m.

Terms

    a(0) =1a(1) =2a(2) =3a(3) =5a(4) =8a(5) =11a(6) =15a(7) =20a(8) =24a(9) =35a(10) =59a(11) =80a(12) =84a(13) =119a(14) =224a(15) =239a(16) =335a(17) =359a(18) =360a(19) =480a(20) =539a(21) =719a(22) =720a(23) =840a(24) =1079a(25) =1259a(26) =1260a(27) =1679a(28) =2519a(29) =4199

External references