A138900 First gap of length at least n in A136110, lower end.

1, 9, 18, 38, 98, 384, 2580, 2580, 2580, 2580, 2580, 367574, 721449, 3879720, 3879720, 53671968, 53671968, 223610114

Offset

1,2

Links

Table of n, a(n) for n=1..18.

Example

First few terms of A136110 are 1,3,4,6,7,9,12,13,15,17,18,22,23,... . The first gap of length 1 is between 1 and 3, hence a(1) = 1; the first gap of length 2 is between 9 and 12, hence a(2) = 9; the first gap of length 3 is between 18 and 22, hence a(3) = 18. The first gap of length at least 7 is between 2580 and 2592; it has length 11,
hence a(7) = a(8) = a(9) = a(10) = a(11) = 2580.

Crossrefs

Cf. A136110, A138899, A138845.

Sequence in context: A005010 A245425 A000547 * A202187 A370016 A057373

Adjacent sequences: A138897 A138898 A138899 * A138901 A138902 A138903

Keyword

nonn,more

Author

Klaus Brockhaus, Apr 03 2008

Extensions

a(14)-a(18) from Donovan Johnson, Nov 27 2010

Status

approved