22310

Appears in sequences

• Sequence A014486 shown in base 4.at n=26A085185
• 2*3*5*6*...*a(n) -+ 1 are primes, with a(n+1) > a(n).at n=44A087900
• Number T(n,k) of tilings of a 5 X n rectangle with pentominoes of any shape and exactly k pentominoes of shape I; triangle T(n,k), n>=0, 0<=k<=n, read by rows.at n=30A247703
• Number of nX4 integer arrays with each element equal to the number of horizontal and vertical neighbors differing from itself by exactly one.at n=20A266077
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 393", based on the 5-celled von Neumann neighborhood.at n=34A271604
• G.f. A(x) satisfies: A(x) = 1 + x*A(x^2)/(1 - x)^2.at n=40A307889
• a(n) is the smallest even number k such that the symmetric representation of sigma(k) has n parts.at n=6A320521
• Square array read by antidiagonals in which T(n,k) is the n-th even number j with the property that the symmetric representation of sigma(j) has k parts.at n=27A320537
• Numbers that cannot be expressed as the sum of one or more numbers without any repeated digits.at n=15A342080