Search: id:A049285
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%I A049285
%S A049285 0,0,0,0,1,1,2,4,7,13,24,43,78,141,253,455,818,1468,2637,4734,8495,
%T A049285 15247,27361,49094,88093,158063,283599,508840,912956,1638003,2938861,
%U A049285 5272795,9460227,16973125,30452380,54636174,98025512,175872397
%N A049285 Restricted partitions.
%D A049285 Even, Shimon; Lempel, Abraham; Generation and enumeration of all solutions 
               of the characteristic sum condition. Information and Control 21 (1972), 
               476-482.
%D A049285 Minc, H.; A problem in partitions: Enumeration of elements of a given 
               degree in the free commutative entropic cyclic groupoid. Proc. Edinburgh 
               Math. Soc. (2) 11 1958/1959 223-224.
%p A049285 v := proc(c,d) option remember; local i; if d < 0 or c < 0 then 0 elif 
               d = c then 1 else add(v(i,d-c),i=1..2*c); fi; end; [ seq(v(5,n), 
               n=1..50) ];
%Y A049285 Cf. A002572, A002573, A049284, A002574.
%Y A049285 Sequence in context: A090427 A006745 A049284 this_sequence A002843 A128742 
               A107281
%Y A049285 Adjacent sequences: A049282 A049283 A049284 this_sequence A049286 A049287 
               A049288
%K A049285 nonn,easy
%O A049285 1,7
%A A049285 N. J. A. Sloane (njas(AT)research.att.com), Michael Somos

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