80533

Appears in sequences

• Row sums of number triangle A070895.at n=11A187044
• a(0)=0, a(1)=0; for n>1, a(n) = a(n-1) + (n-3)*a(n-2) + 1.at n=13A193361
• Number of tilings of a 20 X n rectangle using 2n decominoes of shape I.at n=32A250667
• Consecutive states of the linear congruential pseudo-random number generator (421*s + 17117) mod 81000 when started at s=1.at n=36A385338