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A264109 Number of (n+1)X(6+1) arrays of permutations of 0..n*7+6 with each element having index change +-(.,.) 0,0 0,2 or 1,1. 1
1936, 167464, 15437041, 1399892079, 127528266321, 11613782698504, 1057423575802500, 96278613956842527, 8766291363504861316, 798181501446239189664, 72675347993710995638169, 6617174682296494732387825 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 6 of A264110.
LINKS
FORMULA
Empirical: a(n) = 87*a(n-1) +32068*a(n-3) +180766*a(n-4) -3715198*a(n-5) -16639004*a(n-6) +149707392*a(n-7) +542256817*a(n-8) +224301365*a(n-9) +4280490864*a(n-10) -2613943512*a(n-11) +12541107972*a(n-12) -12056948868*a(n-13) +9621158616*a(n-14) -5946708960*a(n-15) -2779571151*a(n-16) +6286349025*a(n-17) -2468635920*a(n-18) -364811148*a(n-19) +148489470*a(n-20) -3874014*a(n-21) +2657124*a(n-22) +16767*a(n-24) +243*a(n-25)
EXAMPLE
Some solutions for n=2
..0..3..4..1..2..5..6....0..9.10..3..4.13..6....0..3.10.11..6..5..4
.15..8..9.10.11.12.13...15..8..1..2.11.20..5....9..8..1..2.19.12.13
.14..7.16.19.20.17.18...14..7.18.17.16.19.12...14..7.18.15.16.17.20
CROSSREFS
Cf. A264110.
Sequence in context: A270265 A237010 A256765 * A188369 A185570 A367679
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 03 2015
STATUS
approved

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Last modified March 28 13:42 EDT 2024. Contains 371254 sequences. (Running on oeis4.)