762793domain: NAppears in sequencesFibonacci sequence beginning 1, 26.at n=23A022396Numbers whose base-15 representation has exactly 6 runs.at n=26A043673a(n) = n*F(n) - (n-1)*F(n-1), where the F(j)'s are the Fibonacci numbers (F(0)=0, F(1)=1).at n=24A136391