A216179 a(n) = 10^n + 3.

13, 103, 1003, 10003, 100003, 1000003, 10000003, 100000003, 1000000003, 10000000003, 100000000003, 1000000000003, 10000000000003, 100000000000003, 1000000000000003, 10000000000000003, 100000000000000003, 1000000000000000003, 10000000000000000003

Offset: 1

Author

Ivan Panchenko, Mar 10 2013

Keywords

• nonn
• easy

Comments

1 followed by n - 1 0's followed by 3

Links

• Markus Tervooren, Factorizations of 1(0)w3

Crossrefs

Cf. A049054.

Programs

Mathematica

Table[10^n + 3, {n, 1, 19}]
NestList[10# - 27 &, 13, 18]

Formula

a(n) = 10a(n - 1) - 27 with n > 1, a(1) = 13.