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A030726
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Numbers k such that A030717(k) = 4.
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9
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11, 14, 24, 58, 64, 145, 222, 253, 290, 326, 328, 364, 449, 451, 491, 496, 538, 539, 588, 589, 595, 641, 642, 648, 650, 653, 697, 698, 704, 706, 710, 757, 758, 764, 766, 819, 820, 828, 884, 885, 953, 954, 964, 1025, 1026, 1036, 1103, 1104, 1114, 1186, 1187
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OFFSET
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1,1
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LINKS
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Michael De Vlieger, Plot a(s(j) + k - 1) at (j,k) for j = 1..512 and s = partial sums of A030719, showing a(m) = 4 in red, a(m) = 1 in medium blue for reference, and other values of a(m) in light blue.
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MATHEMATICA
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nn = 40; m = 4; c[_] = 0; k = a[1] = c[1] = 1; Reap[Do[w = Union@ Array[a, k]; Do[Set[a[j + k], c[w[[j]]]]; If[a[j + k] == m, Sow[m]], {j, Length[w]}]; Do[c[a[j + k]]++, {j, Length[w]}]; k += Length[w], {n, nn}] ][[-1, -1]] (* Michael De Vlieger, Nov 19 2022 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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