44580

Appears in sequences

• Composite numbers requiring increasingly larger bases to become prime by base reversal.at n=25A075243
• Number of binary strings of length n with equal numbers of 00101 and 01010 substrings.at n=16A164245
• G.f. satisfies: A(x) = 1 + Sum_{n>=1} x^n * A(x)^A026250(n).at n=7A193620
• G.f. A(x) satisfies: A(x) = 1 + x*A(x)^6 - x^2/A(x)^26.at n=6A295536
• (1/10) times the sum of the elements of all subsets of [n] whose sum is divisible by ten.at n=16A309302
• a(n) = Sum_{k=0..n}C(n,k)*C(n+k,k)*C(2k,k)*C(2n-2k,n-k)*(-8)^(n-k).at n=4A337332