A259648 a(n) = floor( prime(n)^3 / (n*log(n)) ).

19, 37, 61, 165, 204, 360, 412, 615, 1059, 1129, 1698, 2066, 2151, 2555, 3356, 4264, 4362, 5376, 5973, 6084, 7250, 7928, 9242, 11341, 12162, 12279, 13129, 13261, 14141, 19242, 20270, 22285, 22399, 26583, 26688, 28965, 31330, 32597, 35090, 37668, 37773, 43082

Offset: 2

Author

Ilya Gutkovskiy, Jul 02 2015

Keywords

• nonn

Crossrefs

Cf. A024702, A011757, A138672.

Programs

Magma

[Floor((NthPrime(n))^3/(n*Log(n))): n in [2..60]]; // Vincenzo Librandi, Jul 03 2015

Mathematica

Table[Floor[Prime[n]^3/(n Log[n])], {n, 2, 30}]

PARI

a(n) = floor(prime(n)^3/(n*log(n))); \\ Michel Marcus, Jul 02 2015

Formula

a(n) = floor( A030078(n) / (n*log(n))).