A060316 a(n) is the smallest natural number we cannot obtain from n, n+1, n+2, n+3, n+4, n+5 and the operators +, -, *, /, using each number only once.

76, 284, 433, 734, 842, 1102, 1228, 1366, 1652, 709, 859, 879, 943, 1070, 1091, 749, 829, 530, 628, 653, 677, 202, 342, 293, 248, 238, 247, 245, 253, 336, 251, 147, 125, 155, 127, 163, 139, 133, 149, 181, 157, 153, 155, 169, 162, 157, 131, 174, 176, 169

Offset

0,1

Comments

Asymptotically the sequence tends to 13. The first n for which a(n) equals the limit is n=83. - Gilles A.Fleury, Oct 18 2008

Links

Gilles A. Fleury, Table of n, a(n) for n = 0..100, Oct 18 2008.

Gilles Bannay, Countdown Problem

Index entries for similar sequences

Example

u(0)=76 is the smallest natural number we can't obtain with 0, 1, 2, 3, 4, 5 and the operators +, -, *, /, using each number only once.

Crossrefs

Cf. A060315, A141494.

Sequence in context: A324632 A251078 A153676 * A005571 A233877 A067987

Adjacent sequences: A060313 A060314 A060315 * A060317 A060318 A060319

Keyword

nonn

Author

Jean-Marc Rebert, Mar 28 2001

Extensions

More terms from Koksal Karakus (karakusk(AT)hotmail.com), May 28 2002

Status

approved