22771

Appears in sequences

• a(n) = n*2^n + 2*n^2 + 1.at n=11A046916
• Centered 23-gonal numbers.at n=44A069174
• Number of 2 X n 0..2 arrays with antidiagonals unimodal and rows and diagonals nondecreasing.at n=19A224000
• a(n) = (2*n-3)*a(n-1) - 2*a(n-2), a(0)=0, a(1)=1.at n=8A256710
• Numbers k such that 2^k + 5*k is a prime.at n=19A299642
• a(n) = [y^n*x^n/n] log( Sum_{m>=0} (1 + m*y + y^2)^m * x^m ) for n >= 1.at n=4A360348
• a(n) = n! * Sum_{k=0..floor(n/4)} (-k/24)^k / (k! * (n-4*k)!).at n=11A362342