A143192 a(n) is the smallest natural number we cannot obtain from n, n+1, n+2, n+3, n+4, n+5, n+6, n+7 and the operators +, -, *, /, using each number only once.

1413, 7187, 12421, 22751, 28862, 48046, 36094, 46372, 54214, 72845, 88119, 107246, 125589, 104153, 43838, 45893, 55054, 62090, 66226, 70187, 69638, 74941, 85303, 81913, 68891, 77237, 37997, 48758, 42827, 45554, 22217, 26617, 29422, 29099

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 67 (the first n for which a(n)=67 is n=1042).

Links

Gilles A. Fleury, Table of n, a(n) for n = 0..1500

Crossrefs

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

Sequence in context: A204745 A204741 A237742 * A237863 A263671 A207046

Adjacent sequences: A143189 A143190 A143191 * A143193 A143194 A143195

Keyword

nonn

Author

Gilles A.Fleury, Oct 18 2008, Mar 06 2009

Status

approved