19971

Appears in sequences

• Expansion of 1/((1-3x)(1-4x)(1-5x)(1-7x)).at n=4A028026
• Numbers k such that 271*2^k-1 is prime.at n=9A050894
• Unicode codes for the Han digits.at n=7A061745
• a(n) = n*(6*n^2 + 15*n + 5)/2.at n=18A163833
• Number of (w,x,y,z) with all terms in {1,...,n} and 3w=x+y+z+n+2.at n=42A212252
• Number of 3 X n 0..3 arrays with no element equal to one plus the sum of elements to its left or two plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4.at n=8A240002
• Coefficients of the power series expansion at p=1 of the growth rate C(p) of the length of the longest increasing path in an Erdös-Rényi graph with edge probability p.at n=17A321309
• Positions of 0's in A330314.at n=21A330325