A139387 First gap of length at least n in A007951, lower end.

2, 11, 133, 497, 4963, 34486, 68978, 14877929, 6186632564, 6186632564

Offset: 1

Author

Klaus Brockhaus, Apr 17 2008

Keywords

• nonn
• more

Comments

a(11) > 10^11. - Donovan Johnson

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.
		

Crossrefs

Cf. A007951, A138845, A138900, A139386.

Extensions

a(8)-a(10) from Donovan Johnson, Dec 27 2010