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A264572 Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 with each element having directed index change 1,0 1,1 0,-1 or -1,1. 1
2, 8, 31, 192, 1130, 8356, 47571, 305844, 1871556, 11815440, 73467099, 457338532, 2850911356, 17771612880, 110773680091, 690026338272, 4300552632388, 26800830750202, 167010622956533, 1040699613256184, 6485315542593720 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 4 of A264569.

LINKS

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

R. H. Hardin, Empirical recurrence of order 56

FORMULA

Empirical recurrence of order 56 (see link above)

EXAMPLE

Some solutions for n=4

..1..5..3..4..8....1..2..3..4..8....1..2..3..7..8....1..2..6..7..8

..0.10..2.12.13....0.10.11..9.13....6..0.11..9..4....0.10.11..3..4

.11..6..7.14..9....5..6..7.14.18....5.12.13.14.18....5.15.13.17..9

.16.20.18.22.23...16.20.12.22.23...10.20.21.22.23...16.20.12.19.14

.21.15.17.24.19...21.15.17.24.19...15.16.17.24.19...21.22.23.24.18

CROSSREFS

Cf. A264569.

Sequence in context: A120774 A261052 A128324 * A279692 A323145 A071387

Adjacent sequences:  A264569 A264570 A264571 * A264573 A264574 A264575

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 17 2015

STATUS

approved

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Last modified January 17 12:18 EST 2020. Contains 330958 sequences. (Running on oeis4.)