A046995: Greek-key tour on 4 x n board

N. J. A. Sloane njas at research.att.com
Tue Apr 1 17:13:48 CEST 2003

roughly speaking i will happily accept
any sequence that is interesting 

- especially if it hard to caluclute

So 5Xn 6Xn 7Xn diagonals will be welcome

There is no definite limit on the number of terms that
is given in the database

The indices of the Mersenne primes for example
extend beyonf the usual 3 lines

My programs will truncate the sequence to 3 lines,
but i can overrule them, especially if you tell
me, please include all the terms, or
words to
that affect

Don't forget that the database also includes many 2-D arrays,

In the case of an infinite square array,

a11 a12 a13 ...
a21 a22 a23 ...
a31 ....

this normally gets recorded as the sequence

a11 a12 a21 a13 a22 a31 ...

so please make sure that the sequence from your m x n board problem
is in the database - and send it in if it isn't


all the best

Neil Sloane

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