39758

Appears in sequences

• Permutation of natural numbers: a(n) = A243283(A122111((2*n)-1)).at n=41A244984
• a(n) = Position of 2^n among the numbers which are divisible by the square of their highest noncomposite factor (i.e., the union of {1} and A070003), 0 if not there.at n=23A244986
• Number of n X 5 nonnegative integer arrays with upper left 0 and lower right its king-move distance away minus 3 and every value within 3 of its king move distance from the upper left and every value increasing by 0 or 1 with every step right, diagonally se or down.at n=6A253001
• Number of nX7 nonnegative integer arrays with upper left 0 and lower right its king-move distance away minus 3 and every value within 3 of its king move distance from the upper left and every value increasing by 0 or 1 with every step right, diagonally se or down.at n=4A253003
• T(n,k) = Number of n X k nonnegative integer arrays with upper left 0 and lower right its king-move distance away minus 3 and every value within 3 of its king move distance from the upper left and every value increasing by 0 or 1 with every step right, diagonally se or down.at n=59A253004
• Numbers k such that the factor method (A064097) for computing the k-th power has fewer multiplications than Knuth's power tree method (A114622).at n=1A256653
• Numbers k such that 433*2^k+1 is prime.at n=13A323145