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 A325864 Number of subsets of {1..n} of which every subset has a different sum. 17
 1, 2, 4, 7, 13, 22, 36, 56, 91, 135, 211, 307, 446, 625, 882, 1194, 1677, 2238, 3031, 4001, 5460, 6995, 9302, 11921, 15424, 19554, 25032, 31005, 39170, 48251, 59917, 73093, 90831, 109271, 134049, 160922, 196109, 234179, 284157, 335933, 408390, 482597, 575109 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Fausto A. C. Cariboni, Table of n, a(n) for n = 0..150 (terms 0..60 from Giovanni Resta) EXAMPLE The a(0) = 1 through a(4) = 13 subsets:   {}  {}   {}     {}     {}       {1}  {1}    {1}    {1}            {2}    {2}    {2}            {1,2}  {3}    {3}                   {1,2}  {4}                   {1,3}  {1,2}                   {2,3}  {1,3}                          {1,4}                          {2,3}                          {2,4}                          {3,4}                          {1,2,4}                          {2,3,4} MATHEMATICA Table[Length[Select[Subsets[Range[n]], UnsameQ@@Plus@@@Subsets[#]&]], {n, 0, 10}] CROSSREFS Cf. A002033, A108917, A143823, A196723, A275972. Cf. A325860, A325865, A325866, A325867, A325877, A325878, A325879, A325880. Sequence in context: A061257 A061255 A088111 * A143823 A119983 A151897 Adjacent sequences:  A325861 A325862 A325863 * A325865 A325866 A325867 KEYWORD nonn AUTHOR Gus Wiseman, Jun 01 2019 EXTENSIONS a(18)-a(42) from Alois P. Heinz, Jun 03 2019 STATUS approved

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Last modified May 14 13:50 EDT 2021. Contains 343884 sequences. (Running on oeis4.)