A269125 Number of sequences with n copies each of 1,2,...,7 avoiding the pattern 12...7.

1, 5039, 674641325, 171248808285596, 54391509124298646609, 18675035107760751336633904, 6541943110420293280017597411002, 2285085934263252199073238394141449534, 789007694236868030155290867470985247486401, 268568796699793322439632085075432144258760935329

Offset

0,2

Links

Alois P. Heinz, Table of n, a(n) for n = 0..100

Formula

a(n) = A071549(n) - A268843(n).

Crossrefs

Row n=7 of A269129.

Cf. A071549, A268843.

Sequence in context: A309034 A237690 A290121 * A111030 A068378 A036458

Adjacent sequences: A269122 A269123 A269124 * A269126 A269127 A269128

Keyword

nonn

Author

Alois P. Heinz, Feb 19 2016

Status

approved