a(n) is the first start of a sequence of exactly n members of A175648 under the map k -> 3*k+4.

A352137

a(n) is the first start of a sequence of exactly n members of A175648 under the map k -> 3*k+4.

Terms

    a(0) =21a(1) =6a(2) =155a(3) =1111a(4) =77635a(5) =25877a(6) =16392913a(7) =78494323

External references