a(n) = 61 written in base n.

Terms

a(1) =111101a(2) =2021a(3) =331a(4) =221a(5) =141a(6) =115a(7) =75a(8) =67a(9) =61a(10) =56a(11) =51a(12) =49a(13) =45a(14) =41