A373215 Signature sequence of Pi/2.

1, 2, 1, 3, 2, 4, 1, 3, 5, 2, 4, 1, 6, 3, 5, 2, 7, 4, 1, 6, 3, 8, 5, 2, 7, 4, 1, 9, 6, 3, 8, 5, 2, 10, 7, 4, 1, 9, 6, 3, 11, 8, 5, 2, 10, 7, 4, 1, 12, 9, 6, 3, 11, 8, 5, 2, 13, 10, 7, 4, 1, 12, 9, 6, 3, 14, 11, 8, 5, 2, 13, 10, 7, 4, 15, 1, 12, 9, 6, 3, 14, 11, 8, 5, 16, 2, 13, 10, 7, 4, 15, 1, 12, 9, 6, 17, 3, 14, 11, 8, 5

Offset: 1

Author

R. J. Mathar, May 28 2024

Keywords

• nonn

Comments

Signature sequence of x = A019669: defined by sorting the values of i+j*x, i,j>=1, and collecting the list of the i in that order.

Starts similar to A191475, because Pi/2 = 1.5708... is close to log_2(3) = 1.5849.....

Links

• Index entries for sequences related to signature sequences

Crossrefs

Cf. A019669.