75768

Appears in sequences

• Sum{T(i,n-i): i=0,1,...,n}, array T as in A047150.at n=17A047151
• Numbers that can be expressed as the difference of the squares of primes in exactly seven distinct ways.at n=21A092003
• Expansion of x/(1 - 2*x^2 - 21*x^3).at n=12A122509
• Numbers k such that k*(k+1)-1 and k*(k+1)+1 are twin primes and k*(k+3)-1 and k*(k+3)+1 are also twin primes.at n=28A138303
• Number of binary strings of length n with no substrings equal to 0001 0010 or 0101.at n=17A164446
• Sum of the third largest parts of the partitions of 4n into 4 parts.at n=22A242727
• a(n) = n*(n+1)*(n+3).at n=41A317637
• Number of multiples of n which have only distinct and nonzero digits in base 10.at n=13A328287
• Number of compositions of n that are the run-sums of some other composition.at n=20A354910
• Table read by rows: T(n,k) = the number of regions with k sides, k >= 3, in a Farey diagram of order (n,n).at n=13A358885