A171736 10^n*(2+7*10^n)+7.

16, 727, 70207, 7002007, 700020007, 70000200007, 7000002000007, 700000020000007, 70000000200000007, 7000000002000000007, 700000000020000000007, 70000000000200000000007

Offset

0,1

Links

Table of n, a(n) for n=0..11.

Mathematica

Join[{16}, FromDigits/@Table[Join[{7}, PadRight[{}, n, 0], {2}, PadRight[{}, n, 0], {7}], {n, 0, 10}]] (* Harvey P. Dale, Aug 14 2019 *)

Crossrefs

Sequence in context: A362574 A220809 A221023 * A062206 A209537 A086701

Adjacent sequences: A171733 A171734 A171735 * A171737 A171738 A171739

Keyword

easy,nonn

Author

Jason Earls, Dec 17 2009

Status

approved