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A264553 Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 with each element having directed index change -1,1 -1,2 1,0 or 0,-1. 1
0, 10, 45, 216, 1528, 11728, 66372, 403920, 2587588, 16422928, 100924052, 627229368, 3931197172, 24518011160, 152485541704, 950191656704, 5926384223020, 36928044675096, 230056295804064, 1433703853124720 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Row 4 of A264550.
LINKS
FORMULA
Empirical recurrence of order 56 (see link above)
EXAMPLE
Some solutions for n=4
..1..2..3..4..7....1..2..3..6..8....1..2..5..6..8....1..5..3..4..7
..0.10.11..9.12....0..7.11..9..4....0..7.10..3..4....0.10..2..9.12
..5..6.15..8.18....5.15.16.14.18...11.12.13.17..9...11..6.13..8.18
.16.17.20.13.14...10.20.12.13.23...16.20.18.21.14...16.17.20.21.14
.21.22.23.24.19...21.22.17.24.19...15.22.23.24.19...15.22.23.24.19
CROSSREFS
Cf. A264550.
Sequence in context: A241432 A317020 A141499 * A278641 A219709 A061772
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 17 2015
STATUS
approved

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Last modified February 23 02:31 EST 2024. Contains 370265 sequences. (Running on oeis4.)