A139387 First gap of length at least n in A007951, lower end.
2, 11, 133, 497, 4963, 34486, 68978, 14877929, 6186632564, 6186632564
Offset: 1
Examples
First few terms of A007951 are 1,2,4,5,7,8,10,11,14,16, ... . The first gap of length 1 is between 2 and 4, so a(1) = 2; the first gap of length 2 is between 11 and 14, so a(2) = 11.
Extensions
a(8)-a(10) from Donovan Johnson, Dec 27 2010
Comments