A073171 (n^2)-th composite number.

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

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 A365306

Adjacent sequences: A073168 A073169 A073170 * A073172 A073173 A073174

Keyword

nonn

Author

Labos Elemer, Jul 19 2002

Status

approved