A171656 10^n*(7+3*10^n)+3.

13, 373, 30703, 3007003, 300070003, 30000700003, 3000007000003, 300000070000003, 30000000700000003, 3000000007000000003, 300000000070000000003, 30000000000700000000003, 3000000000007000000000003, 300000000000070000000000003, 30000000000000700000000000003

Offset

0,1

Links

Table of n, a(n) for n=0..14.

Mathematica

Table[10^n*(7+3*10^n)+3, {n, 0, 20}] (* Harvey P. Dale, Mar 01 2017 *)

Crossrefs

Sequence in context: A009085 A012013 A082403 * A320458 A320635 A279306

Adjacent sequences: A171653 A171654 A171655 * A171657 A171658 A171659

Keyword

easy,nonn

Author

Jason Earls, Dec 14 2009

Extensions

More terms from Harvey P. Dale, Mar 01 2017

Status

approved