A375493 "s" coefficients of a log_2-like sequence of algebraic integers of the form (r+phi*s), where r and s are integers and phi = (1+sqrt(5))/2 is the golden ratio.

0, 0, 1, 0, -1, 1, 3, 0, 2, -1, -4, 1, -2, 3, 0, 0, -3, 2, 7, -1, 4, -4, -12, 1, -2, -2, 3, 3, 8, 0, 0, 0, -3, -3, 2, 2, -6, 7, -1, -1, -9, 4, 17, -4, 1, -12, -33, 1, 6, -2, -2, -2, -10, 3, -5, 3, 8, 8, 21, 0, 0, 0, 5, 0, -3, -3, -3, -3, -11, 2, 2, 2, 15, -6

Offset

1,7

Comments

This sequence and A375484 are a co-recursive pair, see A375484 for the construction.

Links

Table of n, a(n) for n=1..74.

Prog

(Python) # See A375484.

Crossrefs

Cf. A001622, A375484.

Sequence in context: A337320 A194808 A329204 * A268464 A165066 A034389

Adjacent sequences: A375490 A375491 A375492 * A375494 A375495 A375496

Keyword

sign

Author

Michael J Norris, Aug 17 2024

Status

approved