A177328 Number of permutations of n copies of 1..7 with all adjacent differences <= 3 in absolute value.

1, 428, 6068622, 171548183912, 6595449547140990, 302061042944500510428, 15490059482899736687180550, 859754565449162833823191994960, 50593398455336474751923402897514750, 3114239698138241536925385754973336892980, 198659268102792043540362525905723850226165122

Offset: 0

Author

R. H. Hardin, May 06 2010

Keywords

• nonn

Links

• Martin Fuller, Table of n, a(n) for n = 0..11

Extensions

a(0) and a(6) from Alois P. Heinz, Jan 20 2020

a(7) onwards from Martin Fuller, Jun 07 2025