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A108408 Unique values found in A108407. Complement of A108409. 2
1, 2, 3, 4, 6, 8, 9, 10, 12, 14, 15, 16, 17, 18, 22, 23, 24, 25, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 49, 52, 53, 54, 55, 56, 57, 58, 59, 60, 62, 63, 64, 66, 67, 69, 70, 71, 72, 73, 74, 77, 78, 79, 82, 83, 84, 85, 86, 87, 88, 89, 90 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..71.

MATHEMATICA

terms = 71;

nmax = 3 terms;

A062854 = Table[u = If[n == 1, {}, Union[u, n Range[n]]]; Length[u], {n, 1, nmax + 1}] // Differences // Prepend[#, 1]&;

a108407[n_] := n + 1 - A062854[[n+1]];

Array[a108407, nmax] // Union // Rest // Take[#, terms]& (* Jean-Fran├žois Alcover, Oct 02 2020 *)

CROSSREFS

Sequence in context: A101513 A153276 A298866 * A173905 A171581 A063450

Adjacent sequences:  A108405 A108406 A108407 * A108409 A108410 A108411

KEYWORD

nonn

AUTHOR

Ralf Stephan, Jun 03 2005

STATUS

approved

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Last modified May 12 16:56 EDT 2021. Contains 343825 sequences. (Running on oeis4.)