A116961 Numbers of the form 2^(2^n-1)-1, 2^(2^n-1), 2^(2^n)-1, 2^(2^n).

0, 1, 2, 3, 4, 7, 8, 15, 16, 127, 128, 255, 256, 32767, 32768, 65535, 65536, 2147483647, 2147483648, 4294967295, 4294967296, 9223372036854775807, 9223372036854775808, 18446744073709551615, 18446744073709551616

Offset

1,3

Comments

The values are important in binary computer arithmetic.

Links

Table of n, a(n) for n=1..25.

Crossrefs

Cf. A001146, A051179, A058891, A077585.

Sequence in context: A368448 A015927 A097110 * A300486 A120611 A092063

Adjacent sequences: A116958 A116959 A116960 * A116962 A116963 A116964

Keyword

nonn

Author

Henrik Lundquist (sploinker(AT)sploink.dk), Mar 30 2006

Extensions

Edited by Don Reble, Mar 31 2006

Status

approved