23224

Appears in sequences

• a(n) = Sum_{k=0..n-1} T(n,k) * T(n,k+1), with T given by A026703.at n=6A026997
• Sort then Add, a(1)=13.at n=12A033897
• McKay-Thompson series of class 9B for the Monster group.at n=31A058091
• G.f. A(x) satisfies: 1 = Sum_{n>=0} x^n * ((1 + 5*x)^n - A(x))^(n+1), where A(0) = 0.at n=5A325585
• Numbers n for which R(n) + 4*10^floor(n/2) is prime, where R(n) = (10^n-1)/9 (repunit: A002275).at n=14A331869
• Numbers k such that 24*k-1 has at least three factors 7 and the partition function evaluated at k has at least the same number of factors 7 as 24*k-1.at n=28A340957