The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A361516 Indices of records in A361511. 3
1, 3, 5, 7, 9, 12, 14, 18, 21, 32, 39, 47, 53, 59, 67, 94, 134, 170, 196, 236, 256, 280, 394, 441, 455, 519, 547, 589, 635, 778, 809, 862, 875, 946, 961, 975, 1011, 1053, 1110, 1266, 1469, 1538, 1844, 2043, 2277, 2334, 2369, 2423, 2485, 2596, 2711, 2755, 2934, 2990, 3125, 3369, 3436, 3594, 3762, 3984, 4215, 4290, 4432, 4621, 4677, 4712, 4750, 4897 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
Michael De Vlieger, Table of n, a(n) for n = 1..6811 (all in a(n) for n = 1..2^28)
MATHEMATICA
nn = 5000; c[_] = False; f[n_] := DivisorSigma[0, n]; a[1] = m = 1; r = 0; Reap[Do[(If[c[#], a[n] = # + f[a[m]] ; m++, a[n] = f[#]]; c[#] = True; If[# > r, r = #; Sow[n - 1]]) &[a[n - 1]], {n, 2, nn}] ][[-1, -1]] (* Michael De Vlieger, Apr 08 2023 *)
CROSSREFS
Sequence in context: A219087 A186705 A361512 * A361515 A072154 A309269
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Apr 08 2023
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 28 15:12 EDT 2024. Contains 372916 sequences. (Running on oeis4.)