login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A258623 Number of length n 1..(n+1) arrays with every leading partial sum divisible by 2, 3, 5 or 7 1

%I #5 Jun 06 2015 08:35:28

%S 1,6,45,264,2094,20462,290231,4010997,78604973,1349514483,35927257375,

%T 779039452374,22813001639693,625228016584233,20522243952244064,

%U 592853223364296015,23932818802986466719,759286889246491909554

%N Number of length n 1..(n+1) arrays with every leading partial sum divisible by 2, 3, 5 or 7

%C Diagonal of A258631

%H R. H. Hardin, <a href="/A258623/b258623.txt">Table of n, a(n) for n = 1..87</a>

%e Some solutions for n=8

%e ..2....2....2....2....2....2....2....2....2....2....2....2....2....2....2....2

%e ..1....1....1....1....1....1....1....1....1....1....1....1....2....1....2....1

%e ..9....4....2....2....1....9....3....3....6....1....3....3....1....1....1....1

%e ..3....9....9....4....3....6....8....4....7....1....2....9....3....5....9....1

%e ..5....8....2....3....8....6....1....4....8....9....8....1....7....1....6....3

%e ..7....4....8....3....9....4....6....7....9....6....4....5....1....6....7....2

%e ..1....7....3....3....1....8....3....6....5....2....1....5....5....8....3....5

%e ..4....9....6....4....8....6....9....9....2....4....9....1....3....1....2....9

%Y Cf. A258631

%K nonn

%O 1,2

%A _R. H. Hardin_, Jun 06 2015

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 29 11:14 EDT 2024. Contains 371278 sequences. (Running on oeis4.)