A064227 From Recamán's sequence (A005132): record values in A057167.

0, 1, 4, 131, 99734, 181653, 328002, 325374625245, 394178473633984

Offset: 1

Author

N. J. A. Sloane, Sep 22 2001

Keywords

• nonn
• nice
• hard
• more

Comments

Let R(n) = n-th term of Recamán's sequence (A005132); consider values of R(n) that take a record number of steps to appear (A064228); sequence gives corresponding values of n.

Links

• N. J. A. Sloane, My favorite integer sequences, in Sequences and their Applications (Proceedings of SETA '98).
• N. J. A. Sloane, FORTRAN program for A005132, A057167, A064227, A064228
• Index entries for sequences related to Recamán's sequence

Crossrefs

Cf. A005132, A057167, A064228.

Extensions

a(8)-a(9) from Allan Wilks, Nov 06 2001

a(10) > 10^25. - Benjamin Chaffin, Jun 13 2006

a(10) > 4.28*10^73. - Benjamin Chaffin, Mar 22 2010

a(10) > 10^230. - Benjamin Chaffin, 2018

Initial term 0 added by N. J. A. Sloane, Feb 26 2023