A152428 Number of binary digits in (2^n)!.

1, 2, 5, 16, 45, 118, 296, 717, 1684, 3876, 8770, 19581, 43251, 94686, 205748, 444255, 954037, 2039137, 4340409, 9205096, 19458756, 41014654, 86223599, 180835794, 378448792, 790452002, 1648012854, 3430243421, 7128922283, 14794715462

Offset

0,2

Comments

Number of binary digits in the factorial of the smallest positive integer having more than n binary digits.

Links

Jon E. Schoenfield, Table of n, a(n) for n=0..100

Mathematica

Table[IntegerLength[(2^n)!, 2], {n, 0, 30}] (* Harvey P. Dale, Apr 21 2014 *)

Crossrefs

Sequence in context: A132734 A148374 A182884 * A317890 A138573 A148375

Adjacent sequences: A152425 A152426 A152427 * A152429 A152430 A152431

Keyword

nonn,base,less

Author

Jon E. Schoenfield, Dec 03 2008

Status

approved