A110627 -id:A110627 - cp's OEIS frontend

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

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, 19, 19, 21, 20, 21, 22, 22, 24, 24, 25, 26, 27, 29, 29, 31, 32, 32, 34, 34, 35, 36, 37, 38, 39, 40, 41, 42, 44, 44, 45, 46, 47, 48, 49, 49, 50, 50, 51, 51, 52, 53, 53, 55, 55, 56, 57, 57

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Paul D. Hanna, Aug 28 2005

nonn

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.

Cf. A110627, A083952.

cp's OEIS Frontend

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

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cp's OEIS Frontend

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.

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