A264194 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 2,1.
225, 29040, 3748096, 324210304, 28044191296, 2585148634024, 238302234835681, 21610191419098239, 1959697832846942241, 178525809871370371359, 16263458710839902875041, 1481085572969040160283784
Offset: 1
Keywords
Examples
Some solutions for n=2 ..0..1..2..5..4.20..6....0.16..2.18..6.20..4....2..1.17..5.19.20..6 ..7.10.11..8..9.12.13....9..8..7.10.13.12.11....9..8..7.12.13.10.11 .14.17.16.15..3.19.18...14.17..1.15..3.19..5...14..0.16.15..3..4.18
Links
- R. H. Hardin, Table of n, a(n) for n = 1..44
Crossrefs
Cf. A264195.
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