proposed

approved

editing

proposed

_Gilles A. Fleury (gilles.fleury(AT)supelec.fr), _, Oct 18 2008

approved

editing

Gilles A. Fleury, <a href="/A143191/b143191.txt">Table of n, a(n) for n=0..300</a>

nonn,new

nonn

1,0,1

Asymptotically , the sequence tends to 28 29 (what is the first n for which a(n)=28 ? 29 is n<=500 for sure... to be found !249).

Gilles A. Fleury, <a href="b143191.txt">Table of n, a(n) for n=0..300</a>

nonn,new

nonn

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

nonn,new

nonn

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

1,1

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 28 (what is the first n for which a(n)=28 ? n<=500 for sure... to be found !)

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

nonn

Gilles A. Fleury (gilles.fleury(AT)supelec.fr), Oct 18 2008

approved