The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A250983 First differences of A094589. 3
 1, 2, 2, 4, 4, 6, 6, 6, 6, 10, 10, 10, 10, 14, 14, 14, 14, 14, 14, 20, 20, 20, 20, 20, 20, 26, 26, 26, 26, 26, 26, 32, 32, 32, 32, 32, 32, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Also, a Golomb-type sequence over A094589, i.e., a sequence obtained from A094589 by repeating each term a certain number of times so that the succession of run lengths of the resulting sequence is again that same sequence. Has the property of idempotence: a(a(n))=a(n). LINKS Ivan Neretin, Table of n, a(n) for n = 1..10000 MATHEMATICA w = {1, 2, 2}; i = 3; Do[ w = Join[w, Array[Length[w] + 1 &, w[[i++]]]]; , {n, 10} ]; w PROG (PARI) flargest(va, n) = {vsa = vecsort(va, , 12); for (k=1, #vsa, if (vsa[k] < n, return (vsa[k])); ); } lista(nn) = {voa = [1]; for (n=2, nn, newoa = flargest(voa, n) + voa[n-1]; print1(newoa - voa[n-1], ", "); voa = concat(voa, newoa); ); } \\ Michel Marcus, Mar 24 2015 CROSSREFS Cf. A094589 (a(n) with repetitions removed), A001462 (Golomb's sequence), A013189 (Golomb's sequence over squares). Sequence in context: A198332 A080606 A083535 * A070320 A124195 A220662 Adjacent sequences: A250980 A250981 A250982 * A250984 A250985 A250986 KEYWORD nonn,easy AUTHOR Ivan Neretin, Mar 20 2015 EXTENSIONS More terms from Michel Marcus, Mar 24 2015 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.

Last modified May 27 22:51 EDT 2023. Contains 362992 sequences. (Running on oeis4.)