A062278 -id:A062278 - cp's OEIS frontend

A233441 a(n) = floor(2^n / n^3).

2, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 2, 3, 5, 9, 16, 26, 44, 76, 131, 226, 393, 689, 1213, 2147, 3818, 6818, 12228, 22012, 39768, 72084, 131072, 239027, 437102, 801393, 1472896, 2713342, 5009438, 9267786, 17179869, 31906432, 59362467, 110632938, 206519839, 386111079

Offset: 1

Alex Ratushnyak, Dec 09 2013

nonn

Paolo Xausa, Table of n, a(n) for n = 1..1000

Cf. A000079, A000578, A060505, A062278.

Cf. A230664, A233442.

Array[Floor[2^#/#^3] &, 50] (* Paolo Xausa, Mar 27 2025 *)

for n in range(1,100):  print(2**n // n**3, end=', ')

a(n) = floor(A000079(n) / A000578(n)).

A230664 a(n) = floor(3^n/n^2).

Original entry on oeis.org

3, 2, 3, 5, 9, 20, 44, 102, 243, 590, 1464, 3690, 9433, 24402, 63772, 168151, 446851, 1195742, 3219560, 8716961, 23719621, 64836900, 177964421, 490329056, 1355661775, 3760156550, 10460353203, 29179582212, 81605680576, 228767924549, 642740266684, 1809590028175

Offset: 1

Alex Ratushnyak, Dec 11 2013

nonn

Cf. A000244, A000290, A060505, A062278.

Cf. A233441, A233471.

Table[Floor[3^n/n^2], {n, 40}] (* Wesley Ivan Hurt, Apr 25 2023 *)

for n in range(1,100):  print(3**n // n**2, end=", ")

a(n) = floor(A000244(n)/A000290(n)).

cp's OEIS Frontend

A233441 a(n) = floor(2^n / n^3).

Views

Author

Keywords

Links

Crossrefs

Programs

Mathematica

Python

Formula