a(n) and floor(a(n)/8) are both squares; i.e., squares that remain squares when written in base 8 and last digit is removed.

A055872

a(n) and floor(a(n)/8) are both squares; i.e., squares that remain squares when written in base 8 and last digit is removed.

Terms

    a(0) =0a(1) =1a(2) =4a(3) =9a(4) =36a(5) =289a(6) =1156a(7) =9801a(8) =39204a(9) =332929a(10) =1331716a(11) =11309769a(12) =45239076a(13) =384199201a(14) =1536796804a(15) =13051463049a(16) =52205852196a(17) =443365544449

External references