The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Please make a donation to keep the OEIS running. We are now in our 56th year. In the past year we added 10000 new sequences and reached almost 9000 citations (which often say "discovered thanks to the OEIS"). Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A136447 Numbers which are not pseudoperfect: Complement of A005835. 4
 1, 2, 3, 4, 5, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 19, 21, 22, 23, 25, 26, 27, 29, 31, 32, 33, 34, 35, 37, 38, 39, 41, 43, 44, 45, 46, 47, 49, 50, 51, 52, 53, 55, 57, 58, 59, 61, 62, 63, 64, 65, 67, 68, 69, 70, 71, 73, 74, 75, 76, 77, 79, 81, 82, 83, 85, 86, 87, 89, 91, 92, 93, 94, 95 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Contains the weird numbers 70, 836, ... (A006037), so is different from the set A005100 of deficient numbers. A065205(a(n)) = A210455(a(n)) = 0. - Reinhard Zumkeller, Jan 21 2013 LINKS Reinhard Zumkeller, Table of n, a(n) for n = 1..10000 MATHEMATICA ppQ[n_] := AnyTrue[Subsets[Divisors[n] // Most], Total[#] == n&]; Select[Range[100], Not[ppQ[#]]&] (* Jean-François Alcover, Aug 03 2018 *) PROG (Haskell) a136447 n = a136447_list !! (n-1) a136447_list = filter ((== 0) . a210455) [1..] -- Reinhard Zumkeller, Jan 21 2013 CROSSREFS Cf. A006037, A005100, A005835, A023196. Sequence in context: A228869 A088725 A094520 * A005100 A051772 A049093 Adjacent sequences:  A136444 A136445 A136446 * A136448 A136449 A136450 KEYWORD nonn AUTHOR N. J. A. Sloane, Apr 06 2008 EXTENSIONS Edited by M. F. Hasler, Jul 18 2016 STATUS approved

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

Last modified November 26 01:22 EST 2020. Contains 338631 sequences. (Running on oeis4.)