The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A139387 First gap of length at least n in A007951, lower end. 1
 2, 11, 133, 497, 4963, 34486, 68978, 14877929, 6186632564, 6186632564 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS a(11) > 10^11. - Donovan Johnson LINKS EXAMPLE 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. Sequence in context: A066382 A276030 A282855 * A041725 A330638 A296571 Adjacent sequences:  A139384 A139385 A139386 * A139388 A139389 A139390 KEYWORD nonn,more AUTHOR Klaus Brockhaus, Apr 17 2008 EXTENSIONS a(8)-a(10) from Donovan Johnson, Dec 27 2010 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified May 25 20:58 EDT 2020. Contains 334597 sequences. (Running on oeis4.)