52440

Appears in sequences

• Number of connected irreducible posets with n labeled points.at n=6A046906
• Successively larger 3-ball indecomposable ground-state site swaps of A084511 in concatenated decimal notation.at n=25A084512
• Successively larger 3-ball 'prime' ground-state site swaps of A084521 in concatenated decimal notation.at n=20A084522
• a(n) = binomial(n+2,2)*binomial(n+6,2).at n=18A104473
• Number of n X n arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 73.at n=4A156524
• Integer areas of integer-sided triangles such that the length of two sides are Fibonacci numbers.at n=16A236539
• Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 489", based on the 5-celled von Neumann neighborhood.at n=7A272511
• a(n) is the least k that is a multiple of A071395(n) (the n-th primitive abundant number) for which A003961(k) is abundant.at n=37A337469
• Numbers k such that the two perfect powers immediately adjacent to k^2 both have exponents greater than 2.at n=31A340643
• Numbers sandwiched between two semiprimes, one of which is a square.at n=33A358686
• Numbers of the form (p+1)*(p+3) where (p,p+2) is a twin prime pair (cf. A001359).at n=15A362941
• Consecutive internal states of the linear congruential pseudo-random number generator (205*s + 29573) mod 139968 when started at 1.at n=19A383127