40330

Appears in sequences

• Numbers k that divide 4^k + 4.at n=20A015889
• Number of subsets of {1,2,3,...,n} that sum to 0 mod 13.at n=19A068034
• Triangle sequence:t(n,m)=(2 n - Binomial[n, m] + m! + (-m + n)!).at n=46A155169
• Triangle sequence:t(n,m)=(2 n - Binomial[n, m] + m! + (-m + n)!).at n=53A155169
• If n = p*10^i + q*10^(i-1) + r*10^(i-2) + ... in decimal notation, then a(n) = p!*10^i + q!*10^(i-1) + r!*10^(i-2)+ ... .at n=18A182287
• Words of length n over the alphabet {0,...,n-1} that avoid the pattern 1213.at n=6A239373
• Words of length n over the alphabet {0,...,n-1} that avoid the pattern 1223.at n=6A239376
• Number of (n+3)X(1+3) 0..1 arrays with each row and column divisible by 13, read as a binary number with top and left being the most significant bits.at n=15A262482
• Numbers k such that 475*2^k+1 is prime.at n=9A319486