A114742 Value of k pertaining to A114741.

4, 4, 4, 6, 4, 6, 10, 2, 6, 4, 8, 8, 6, 22, 18, 4, 194, 26, 1352, 20, 5046, 16, 8070, 18, 44532, 232, 205862, 14, 188540, 80, 682452, 34, 553220, 72, 3310756, 78, 31907920, 60, 147850530, 82, 174357156, 6, 120995076, 6, 37671114, 22, 15590712, 34

Offset

1,1

Links

Table of n, a(n) for n=1..48.

Formula

a(n) = (A114741(n+1) + A114741(n+2))/A114741(n).

Prog

(PARI) { P=Set([2, 3]); u=2; v=3; for(i=1, 100, k=ceil(v/u); while( !ispseudoprime(t=k*u-v) || setsearch(P, t), k++); P=setunion(P, Set([t])); u=v; v=t; print1(k, ", ") ) } \\ Max Alekseyev, Dec 13 2011

Crossrefs

Cf. A114741.

Sequence in context: A141241 A140696 A160401 * A273909 A098013 A073229

Adjacent sequences: A114739 A114740 A114741 * A114743 A114744 A114745

Keyword

nonn

Author

Amarnath Murthy, Nov 15 2005

Extensions

More terms from Franklin T. Adams-Watters, Jul 17 2006

More terms from Max Alekseyev, Dec 13 2011

Status

approved