20662

Appears in sequences

• Expansion of 1/(1-x^2-x^3-x^4-x^5-x^6-x^7).at n=24A013984
• a(n) = Sum_{i=1..n} Sum_{j=1..i} (prime(i) - prime(j)).at n=30A062020
• Numbers k such that k! + (k+1)! - 1 is prime.at n=25A087146
• a(n) = a(n-2) + a(n-3) + a(n-4) + a(n-5) + a(n-6) + a(n-7).at n=23A107479
• Number of nX4 binary arrays without the pattern 0 1 0 diagonally, vertically, antidiagonally or horizontally.at n=4A188690
• Number of nX5 binary arrays without the pattern 0 1 0 diagonally, vertically, antidiagonally or horizontally.at n=3A188691
• T(n,k)=Number of nXk binary arrays without the pattern 0 1 0 diagonally, vertically, antidiagonally or horizontally.at n=31A188695
• T(n,k)=Number of nXk binary arrays without the pattern 0 1 0 diagonally, vertically, antidiagonally or horizontally.at n=32A188695
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 94", based on the 5-celled von Neumann neighborhood.at n=40A270135
• Numerator of the average distance among first n primes.at n=29A332094