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A329370 Number of semi-magic (only long lines are magic) knight's tours on a 4 X 2n board. 2
0, 0, 16, 136, 3102, 58356, 1092618 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..7.

G. P. Jelliss, Semi-magic Knight's Tours

Awani Kumar, Studies in Tours of Knight on Rectangular Boards, arXiv:1802.09340 [math.GM], 2018.

EXAMPLE

Example 4 X 10 semi-magic knight tour (only long lines are magic, Magic Constant is 205):

   1 22  3 40 17 34  9 30 13 36

   4 25 20 27  8 29 16 35 10 31

  21  2 23  6 39 18 33 12 37 14

  24  5 26 19 28  7 38 15 32 11

CROSSREFS

Cf. A328816.

Sequence in context: A341227 A022581 A278283 * A114182 A280601 A301320

Adjacent sequences:  A329367 A329368 A329369 * A329371 A329372 A329373

KEYWORD

nonn,more

AUTHOR

Awani Kumar, Nov 12 2019

STATUS

approved

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Last modified September 19 08:05 EDT 2021. Contains 347556 sequences. (Running on oeis4.)