Number of n-digit positive integers where all pairs of consecutive digits have a difference of at least 6.

A383078

Number of n-digit positive integers where all pairs of consecutive digits have a difference of at least 6.

Terms

    a(0) =9a(1) =16a(2) =50a(3) =140a(4) =407a(5) =1168a(6) =3367a(7) =9691a(8) =27908a(9) =80354a(10) =231374a(11) =666211a(12) =1918282a(13) =5523469a(14) =15904199a(15) =45794312a(16) =131859470a(17) =379674208a(18) =1093228315a(19) =3147825472a(20) =9063802211a(21) =26098178315a(22) =75146709476a(23) =216376326214a(24) =623030800330

External references