A085815 Least k such that A056830(n) + k is prime, where A056830 = alternate digits 1 and 0.

2, 1, 1, 0, 3, 2, 11, 28, 13, 12, 29, 62, 1, 10, 1, 30, 27, 40, 73, 42, 63, 90, 29, 8, 61, 120, 37, 20, 41, 20, 1, 66, 283, 66, 27, 146, 1, 222, 1, 8, 77, 190, 173, 18, 1, 50, 149, 50, 29, 66, 31, 26, 23, 10, 29, 150, 99, 330, 81, 356, 53, 102, 7, 126, 123, 10, 227, 526, 117, 96

Offset

0,1

Links

Table of n, a(n) for n=0..69.

Example

a(7)=28 because 1010101 + 28 = 1010129, a prime.

Crossrefs

Sequence in context: A325794 A119513 A308454 * A088234 A228717 A215977

Adjacent sequences: A085812 A085813 A085814 * A085816 A085817 A085818

Keyword

nonn,base

Author

Jason Earls, Jul 25 2003

Status

approved