A014964 - OEIS

A014964

a(n) = lcm(n, 2^(n-1)).

1, 2, 12, 8, 80, 96, 448, 128, 2304, 2560, 11264, 6144, 53248, 57344, 245760, 32768, 1114112, 1179648, 4980736, 2621440, 22020096, 23068672, 96468992, 25165824, 419430400, 436207616, 1811939328

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OFFSET

1,2

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Index entries for sequences related to lcm's.

FORMULA

a(n) = n * A084623(n). - Paul Curtz, May 21 2016.

Sum_{n>=1} 1/a(n) = log(A258716) = 1.74244411316868869685249... . - Amiram Eldar, Aug 05 2026

MATHEMATICA

Table[LCM[n, 2^(n-1)], {n, 30}] (* Harvey P. Dale, Jun 03 2012 *)

PROG

(PARI) a(n) = lcm(n, 2^(n-1)); \\ Amiram Eldar, Aug 05 2026

CROSSREFS

Cf. A000027, A084623, A258716.

Sequence in context: A385084 A332920 A266511 * A173181 A001898 A268230

Adjacent sequences: A014961 A014962 A014963 * A014965 A014966 A014967

KEYWORD

nonn

AUTHOR

N. J. A. Sloane

STATUS

approved