22579

Appears in sequences

• Terminating decimals of length n of form p/5^q using at most one of each nonzero digit.at n=8A027905
• Bond percolation series for square lattice near a wall.at n=21A056532
• Numbers k such that 2^prime(k) - 1 + 10^k is prime.at n=11A114056
• Fill an array by antidiagonals upwards; in the top left cell enter a(0)=1; thereafter, in the n-th cell, enter the sum of the entries of those earlier cells that can be seen from that cell.at n=39A279212
• Numbers k such that k!6 + 18 is prime, where k!6 is the sextuple factorial number (A085158 ).at n=34A288445
• a(n) = coefficient of x^n in A(x) such that x = Sum_{n=-oo..+oo} x^(n*(3*n+1)/2) * (A(x)^(3*n) - 1/A(x)^(3*n+1)).at n=7A359920