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

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 59th year, we have over 358,000 sequences, and we’ve crossed 10,300 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A255790 Number of (n+2)X(6+2) 0..1 arrays with no 3x3 subblock diagonal sum 2 and no antidiagonal sum 2 and no row sum 0 and no column sum 0 1
2969, 3376, 11631, 38889, 148202, 597517, 2364049, 9385686, 37725371, 151145267, 604492052, 2422300221, 9707487711, 38877851860, 155739534465, 623953526367, 2499517307270, 10012853192311, 40112295626611, 160690888205666 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A255792

LINKS

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

FORMULA

Empirical: a(n) = 5*a(n-1) +2*a(n-2) -22*a(n-3) -3*a(n-4) -100*a(n-5) +323*a(n-6) +170*a(n-7) -916*a(n-8) +1066*a(n-9) -472*a(n-10) +455*a(n-11) -4942*a(n-12) -914*a(n-13) +15635*a(n-14) -7405*a(n-15) +1545*a(n-16) -7020*a(n-17) +9813*a(n-18) -21*a(n-19) -39359*a(n-20) +22443*a(n-21) -9927*a(n-22) +16239*a(n-23) +1297*a(n-24) +27731*a(n-25) +51363*a(n-26) -51582*a(n-27) -71*a(n-28) -23274*a(n-29) -49887*a(n-30) -53724*a(n-31) +10869*a(n-32) +67935*a(n-33) +45603*a(n-34) +13913*a(n-35) +51872*a(n-36) +13265*a(n-37) -57465*a(n-38) -55839*a(n-39) -52005*a(n-40) +7539*a(n-41) -16374*a(n-42) +39312*a(n-43) +87745*a(n-44) +7736*a(n-45) -48272*a(n-46) -43899*a(n-47) +8146*a(n-48) +34445*a(n-49) -7166*a(n-50) -17878*a(n-51) +1977*a(n-52) +27817*a(n-53) -11406*a(n-54) -9109*a(n-55) -4113*a(n-56) +6587*a(n-57) +11068*a(n-58) -14768*a(n-59) -1719*a(n-60) +6940*a(n-61) -743*a(n-62) +1916*a(n-63) -2935*a(n-64) -854*a(n-65) +2131*a(n-66) -784*a(n-67) -91*a(n-68) +258*a(n-69) -218*a(n-70) +189*a(n-71) -2*a(n-72) -110*a(n-73) +32*a(n-74) +12*a(n-75) -4*a(n-76) for n>83

EXAMPLE

Some solutions for n=4

..1..1..1..1..0..1..1..1....1..1..1..0..1..0..1..1....0..1..0..1..0..1..0..1

..1..0..1..0..1..0..1..0....0..1..0..1..0..1..0..1....1..0..1..0..1..1..1..0

..0..1..0..1..0..1..0..1....1..1..1..0..1..0..1..1....1..1..0..1..0..1..0..1

..1..0..1..0..1..0..1..1....0..1..0..1..0..1..0..1....1..0..1..0..1..0..1..0

..0..1..1..1..0..1..0..1....1..0..1..0..1..0..1..1....1..1..0..1..1..1..1..1

..1..0..1..0..1..0..1..1....1..1..1..1..0..1..0..1....1..1..1..0..1..0..1..0

CROSSREFS

Cf. A255792

Sequence in context: A107534 A184079 A236590 * A252947 A272285 A124595

Adjacent sequences: A255787 A255788 A255789 * A255791 A255792 A255793

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 06 2015

STATUS

approved

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 December 4 19:07 EST 2022. Contains 358563 sequences. (Running on oeis4.)