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A111581 G.f.: A(x) = ( G(x)^2 - G(x^2) - 2*x/(1-x^2) )/(4*x^2) where G(x) is the g.f. of A110627. 1

%I #3 Mar 30 2012 18:36:50

%S 1,1,2,2,3,3,4,5,6,7,8,8,9,9,10,10,11,12,12,14,14,15,16,16,17,17,18,

%T 19,19,21,20,21,22,22,24,24,25,26,27,29,29,31,32,32,34,34,35,36,37,38,

%U 39,40,41,42,44,44,45,46,47,48,49,49,50,50,51,51,52,53,53,55,55,56,57,57

%N G.f.: A(x) = ( G(x)^2 - G(x^2) - 2*x/(1-x^2) )/(4*x^2) where G(x) is the g.f. of A110627.

%C A110627 is the bisection of A083952; surprisingly, the self-convolution of A110627 is congruent modulo 4 to A083952, which consists entirely of 1's and 2's.

%Y Cf. A110627, A083952.

%K nonn

%O 0,3

%A _Paul D. Hanna_, Aug 28 2005

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Last modified April 16 12:52 EDT 2024. Contains 371711 sequences. (Running on oeis4.)