

A192049


Ordered sums 4f+5g, where f and g are Lucas numbers (A000032 beginning at 1).


4



9, 17, 19, 21, 24, 27, 31, 32, 33, 36, 39, 43, 47, 48, 49, 51, 59, 63, 64, 67, 71, 77, 79, 83, 87, 92, 94, 99, 102, 106, 107, 118, 121, 127, 131, 134, 136, 149, 151, 157, 161, 162, 171, 173, 189, 193, 203, 206, 208, 217, 223, 239, 243, 247, 251, 261, 263
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OFFSET

1,1


LINKS



MATHEMATICA

c = 4; d = 5; f[n_] := LucasL[n];
g[n_] := c*f[n]; h[n_] := d*f[n];
t[i_, j_] := h[i] + g[j];
u = Table[t[i, j], {i, 1, 20}, {j, 1, 20}];
v = Union[Flatten[u]] (* A192049 *)
t1[i_, j_] := If[g[i]  h[j] > 0, g[i]  h[j], 0]
u1 = Table[t1[i, j], {i, 1, 20}, {j, 1, 20}];
v1 = Union[Flatten[u1]] (*A 192050: c*f(i)d*f(j) *)
g1[n_] := d*f[n]; h1[n_] := c*f[n];
t2[i_, j_] := If[g1[i]  h1[j] > 0, g1[i]  h1[j], 0]
u2 = Table[t2[i, j], {i, 1, 20}, {j, 1, 20}];
v2 = Union[Flatten[u2]] (* A192051: d*f(i)c*f(j) *)


CROSSREFS



KEYWORD

nonn


AUTHOR



STATUS

approved



