|
Search: id:A075059
|
|
| |
|
| 2, 3, 7, 13, 61, 61, 421, 841, 2521, 2521, 27721, 27721, 360361, 360361, 360361, 720721, 12252241, 12252241, 232792561, 232792561, 232792561, 232792561, 5354228881, 5354228881, 26771144401, 26771144401, 80313433201, 80313433201
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
COMMENT
|
Consider the triangle in which the n-th row contains the /second/ run of n consecutive numbers such that the r-th term is divisible by r. Sequence gives the first column of the triangle. The first run trivially begins with 1.
|
|
FORMULA
|
a(n) = 1 + A003418(n).
|
|
EXAMPLE
|
2; 3 4; 7 8 9; 13 14 15 16; 61 62 63 64 65; 61 62 63 64 65 66; ...
|
|
CROSSREFS
|
Cf. A060401, A075061.
Cf. A003418, A060401, A070198, A065500.
Sequence in context: A096263 A007996 A085872 this_sequence A070858 A061067 A104366
Adjacent sequences: A075056 A075057 A075058 this_sequence A075060 A075061 A075062
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Sep 08 2002
|
|
EXTENSIONS
|
New definition from Vladeta Jovovic (vladeta(AT)eunet.rs), Jun 16 2003
Edited by N. J. A. Sloane (njas(AT)research.att.com), Jul 01 2008 at the suggestion of R. J. Mathar
|
|
|
Search completed in 0.002 seconds
|
