1168561

Appears in sequences

• Squares of odd triangular numbers.at n=23A014736
• Integers n such that n divides 24^n - 1.at n=9A014960
• Numbers n such that n | 12^n + 11^n.at n=16A057193
• a(n) = A000931(n)^2.at n=31A133037
• Number of subsets S of {1,2,3,...,n} with the property that if x is a member of S then at least one of x-2 and x+2 is also a member of S.at n=25A172020
• Number of n X 2 binary arrays without the pattern 0 1 0 diagonally, vertically or horizontally.at n=11A188501
• Squares whose arithmetic mean of digits is 4 (i.e., the sum of digits is 4 times the number of digits).at n=11A316484
• Composite numbers m such that tau_k(m) = m for some k, where tau_k is the k-th Piltz divisor function (A077592).at n=24A327774