A019307 First time that the Grundy function G(x) for "subtract-a-Fibonacci-number" takes the value n.

0, 1, 2, 3, 8, 9, 144, 145, 167, 627, 2677, 2725, 2726, 12071, 48652, 206025, 63331966, 307304209, 1357691960

Offset: 0

Author

Torsten Sillke (sillke(AT)lh-systems.de)

Keywords

• nonn
• more

Comments

See Rouse Ball and Coxeter for "subtract-a-square".

References

• W. W. Rouse Ball and H. S. M. Coxeter, Mathematical Recreations and Essays, 12th Edition.

Links

• Rémy Sigrist, C program

Crossrefs

Cf. A014588, A297963.

Programs

C

See Links section.

Extensions

a(17) from Pontus von Brömssen, Jun 06 2022

a(18) from Rémy Sigrist, Jun 12 2022