A357908 Index of the first occurrence of n-th prime in Van Eck's sequence (A181391), or 0 if n-th prime never appears.

5, 20, 12, 66, 44, 121, 41, 89, 101, 225, 72, 92, 548, 199, 297, 1486, 490, 1001, 735, 455, 420, 611, 772, 673, 187, 1612, 3690, 581, 417, 2584, 7574, 162, 1483, 1048, 689, 330, 1320, 4007, 3739, 2884, 528, 3376, 3045, 3658, 2869, 411, 935, 303, 1751, 1122, 376, 5506, 599, 13191, 494

Offset: 1

Author

G. L. Honaker, Jr., Nov 08 2022

Keywords

• nonn

Comments

The first 85669653 terms exist and are less than 10^12, see A181391. - Charles R Greathouse IV, Nov 09 2022

Examples

			a(3) = 12 because position 12 of Van Eck's sequence (A181391) is the first occurrence of 3rd prime number, i.e., 5.
		

Crossrefs

Cf. A181391.

Formula

a(n) > prime(n). - Charles R Greathouse IV, Nov 09 2022