A250219 Number of times that n appears in n-th OEIS sequence (A_n), or -1 if n appears infinitely many times.

-1, -1, 8, 0, -1, 4, 0, 1, 0, 2, 0, 0, 0, 1, 0, 1, 0, 0

Offset: 1

Author

Eric Chen, Dec 24 2014

Keywords

• sign
• more

Comments

Does a(19) equal -1? (See A000019.)

Examples

			From _Jianing Song_, Sep 05 2018: (Start)
a(3) = 8 since A000003(k) = 3 for k = 11, 19, 23, 27, 31, 43, 67 and 163.
a(6) = 4 since A000006(k) = 6 for k = 12, 13, 14 and 15.
a(10) = 2 since A000010(k) = 10 for k = 11 and 22. (End)
		

Links

• Index entries for sequences whose definition involves A_n (or An).

Crossrefs

Cf. A000001, A000002, A000003, A000004, etc.

Extensions

a(3) corrected by Jianing Song, Sep 05 2018