A264339 Number of (n+1)X(6+1) arrays of permutations of 0..n*7+6 with each element having index change +-(.,.) 0,0 0,1 or 1,2.
2521, 223356, 20386617, 1855980772, 168990466353, 15386771913704, 1400983500645217, 127561175981852920, 11614593343457551705, 1057522224021474274212, 96288627697354864622745
Offset: 1
Keywords
Examples
Some solutions for n=1 ..9..1..2..3..5..4..6....9..0..3..2.13..6..5....0.10..2.12..3..5..6 ..7..8..0.10.11.12.13....8..7.10..1.11.12..4....8..7..9..1.11.13..4
Links
- R. H. Hardin, Table of n, a(n) for n = 1..210
Crossrefs
Cf. A264341.
Formula
Empirical: a(n) = 87*a(n-1) +374*a(n-2) -470*a(n-3) +207*a(n-4) +3*a(n-5)
Comments