A066595 Primes which can be expressed as concatenation of powers of 4 and 0's.

11, 41, 101, 401, 641, 1601, 4001, 4111, 4441, 10111, 10141, 11161, 11411, 14011, 14401, 14411, 16001, 16111, 16141, 16411, 25601, 40111, 40961, 41011, 41141, 41161, 41411, 41611, 41641, 44041, 44101, 44111

Offset

1,1

Links

Table of n, a(n) for n=1..32.

Example

641 is a term as it is a concatenation of 64 and 1 which are powers of 4.

Crossrefs

Sequence in context: A132208 A233434 A261538 * A260266 A195117 A027086

Adjacent sequences: A066592 A066593 A066594 * A066596 A066597 A066598

Keyword

base,easy,nonn

Author

Amarnath Murthy, Dec 21 2001

Extensions

Corrected and extended by Christopher Lund (clund(AT)san.rr.com), Apr 14 2002

Status

approved