%I A136283
%S A136283 1,2,8,64,1024,27449,1052793,53470067,3451287371,275322712826,
%T A136283 26566919914276,3047264283807562
%N A136283 Number of graphs on n labeled nodes with degree at most 4.
%D A136283 D. E. Knuth, The Art of Computer Programming, Vol. 4A, Section 7.1.4.
%Y A136283 Cf. A000085 (degree at most 1), A136281-A136286.
%Y A136283 Sequence in context: A084280 A153534 A153563 this_sequence A139680 A153544 
               A153572
%Y A136283 Adjacent sequences: A136280 A136281 A136282 this_sequence A136284 A136285 
               A136286
%K A136283 nonn,more
%O A136283 1,2
%A A136283 D. E. Knuth, Mar 31 2008