A224536 Number of ways a digit can be appended or prepended to n and form a unique prime.

4, 8, 2, 8, 3, 2, 2, 8, 2, 6, 4, 5, 1, 6, 1, 2, 2, 4, 1, 8, 0, 4, 3, 5, 1, 2, 2, 6, 2, 4, 1, 7, 0, 5, 2, 2, 1, 5, 2, 6, 2, 5, 1, 6, 2, 1, 3, 5, 1, 5, 2, 3, 2, 4, 2, 1, 2, 8, 1, 5, 2, 6, 0, 6, 3, 2, 1, 6, 1, 4, 2, 4, 1, 6, 1, 2, 2, 6, 1, 4, 1, 4, 4, 6, 0, 3, 1

Offset: 0

Author

T. D. Noe, Apr 21 2013

Keywords

• nonn
• base

Comments

See A224953 for the main entry. The only difference is a(1) = 8, when two copies of 11 are produced.