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A073171 (n^2)-th composite number. 2
4, 9, 16, 26, 38, 52, 69, 88, 111, 133, 159, 187, 217, 250, 287, 323, 362, 404, 448, 495, 542, 592, 648, 703, 760, 818, 882, 945, 1011, 1081, 1152, 1225, 1302, 1377, 1457, 1539, 1628, 1712, 1800, 1891, 1981, 2077, 2176, 2275, 2378, 2484, 2586, 2697, 2811 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..49.

MATHEMATICA

c[x_] := FixedPoint[x+PrimePi[ # ]+1&, x] Table[c[j^2], {j, 1, 100}]

CROSSREFS

Cf. A002808.

Sequence in context: A189835 A183764 A022334 * A328363 A049739 A006508

Adjacent sequences:  A073168 A073169 A073170 * A073172 A073173 A073174

KEYWORD

nonn

AUTHOR

Labos Elemer, Jul 19 2002

STATUS

approved

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Last modified August 8 02:22 EDT 2020. Contains 336290 sequences. (Running on oeis4.)