A143191 a(n) is the smallest natural number we cannot obtain from n, n+1, n+2, n+3, n+4, n+5, n+6 and the operators +, -, *, /, using each number only once.

284, 1413, 2113, 3266, 4943, 6242, 9105, 11586, 6269, 6427, 8407, 8406, 9224, 11079, 12451, 8392, 3469, 4253, 4043, 4126, 4087, 4657, 4330, 4639, 5114, 3983, 5839, 4415, 6376, 4537, 5231, 5161, 4090, 3199, 2057, 3372, 2285, 2270, 2525, 2609, 2590, 1209

Offset

0,1

Comments

This sequence is related to the sequences A071110 (for 5 successive integers) and A060316 (for 6 successive integers) and others sequences to come...

Asymptotically, the sequence tends to 29 (the first n for which a(n)=29 is n=249).

Links

Gilles A. Fleury, Table of n, a(n) for n=0..300

Crossrefs

Cf. A071110, A060316, A071107, A060315, A141494, A142153.

Sequence in context: A339679 A339683 A343917 * A180220 A108110 A218400

Adjacent sequences: A143188 A143189 A143190 * A143192 A143193 A143194

Keyword

nonn

Author

Gilles A.Fleury, Oct 18 2008

Status

approved