99225

Appears in sequences

• Number of permutations in the symmetric group S_n that have odd order.at n=9A000246
• Squares formed by concatenating other squares, not ending in 0.at n=35A009404
• Expansion of e.g.f.: exp(arcsinh(x)+log(x+1))=1+2*x+3/2!*x^2+3/3!*x^3-3/4!*x^4-15/5!*x^5...at n=10A013069
• a(n) = (9*n)^2.at n=35A017162
• a(n) = (10*n + 5)^2.at n=31A017330
• a(n) = (11*n + 7)^2.at n=28A017474
• a(n) = (12*n + 3)^2.at n=26A017558
• a(n) = n^3 + (n+1)^3 + (n+2)^3 + (n+3)^3 + (n+4)^3.at n=25A027604
• Smallest nontrivial extension of n-th palindrome which is a square.at n=17A030676
• Smallest square starting with a string of n 9's.at n=1A034995
• Odd refactorable numbers.at n=33A036896
• Squares with initial digit '9'.at n=23A045793
• Denominators q[ n ] of convergents to Stern's non-simple continued fraction for Pi/2.at n=8A046126
• Numbers k such that the square of d(k) (number of divisors) divides k.at n=33A046754
• (Terms in A014738)/4.at n=16A051515
• Number of level permutations of degree n.at n=9A053195
• Squares composed of digits {2,5,9}.at n=7A053929
• n is odd and divisible by number of divisors of n and sum of digits of n.at n=10A057530
• Triangle T(n,k) = number of degree-n permutations with k even cycles, k=0..n.at n=45A060523
• a(n) = (2n-1)!! * (2n+1)!!, where the double factorial is A006882.at n=4A079484