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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A212867 Number of nondecreasing sequences of n 1..7 integers with no element dividing the sequence sum 2
0, 12, 29, 59, 112, 199, 319, 503, 733, 1067, 1508, 2104, 2827, 3801, 4974, 6404, 8054, 10101, 12573, 15680, 19309, 23586, 28399, 33966, 40235, 47554, 55866, 65509, 76417, 88971, 103077, 119201, 137210, 157549, 180024, 205015, 232280, 262333, 294930 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 7 of A212868

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=8

..2....2....4....2....3....2....4....2....3....2....2....3....3....5....3....2

..2....4....4....2....3....4....4....2....4....2....2....4....3....5....3....3

..3....4....4....2....3....4....4....2....4....3....2....5....3....6....3....7

..4....5....4....2....3....4....4....2....4....3....3....5....4....6....5....7

..4....6....5....4....6....4....4....3....4....4....3....5....7....6....5....7

..5....6....5....4....6....5....5....3....6....4....3....6....7....6....5....7

..5....6....6....5....7....5....7....4....6....6....3....6....7....6....6....7

..6....6....7....6....7....5....7....5....7....7....7....7....7....7....7....7

CROSSREFS

Sequence in context: A045554 A174649 A161452 * A178494 A049725 A183723

Adjacent sequences:  A212864 A212865 A212866 * A212868 A212869 A212870

KEYWORD

nonn

AUTHOR

R. H. Hardin May 29 2012

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.

License Agreements, Terms of Use, Privacy Policy. .

Last modified February 29 09:41 EST 2020. Contains 332355 sequences. (Running on oeis4.)