88881

Appears in sequences

• Number of distinct values of the (n-1)st difference of permutations of 1..n.at n=13A130803
• Binomial transform of [1, 3, 4, 3, 2, 0, 0, 0, ...].at n=32A136395
• a(n) = (8*10^n - 71)/9 for n > 0.at n=4A173810
• For k in {2,3,...,9} define a sequence as follows: a(0)=0; for n>=0, a(n+1)=a(n)+1, unless a(n) ends in k, in which case a(n+1) is obtained by replacing the last digit of a(n) with the digit(s) of k^2. This is k(9).at n=37A237346
• Squarefree products of k primes that are symmetrically distributed around their average. Case k = 4.at n=37A294751