20746

Appears in sequences

• Numbers k such that 3^k - 2 is prime.at n=26A014224
• Numbers k such that 63*2^k+1 is prime.at n=41A032381
• McKay-Thompson series of class 14C for Monster.at n=16A058504
• Fifth column of (1,5)-Pascal triangle A096940.at n=21A096942
• Quadruple primorial n#### = n#4.at n=13A114420
• Number of partitions of n into at least two parts such that the product of largest and smallest part does not exceed n.at n=37A116901
• Multiplicative encoding of triangle formed by reading Pascal's triangle mod 2 (A047999).at n=12A123098
• McKay-Thompson series of class 14C for the Monster group with a(0) = 4.at n=16A128516
• a(n) = 12167n - 3588.at n=1A156846
• Number of increasing sequences of n integers x(1),...,x(n) with values in 1..4*n such that x(j) divides x(k) iff j divides k.at n=41A180381
• Number of n X n nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors.at n=2A208461
• Number of nX3 nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors.at n=2A208462
• T(n,k) is the number of n X k nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors.at n=12A208466
• Number of 3Xn nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors.at n=2A208468
• Number of 5 X n arrays of the minimum value of corresponding elements and their horizontal or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..1 5 X n array.at n=25A220035
• Number of partitions p of n such that mean(p) > multiplicity(max(p)).at n=37A240202
• Number of functions f:[n]->[n] such that no k exists such that |f^(-1)(k)| = k.at n=6A331537
• Under the isomorphism defined in A329329, of polynomials in GF(2)[x,y] to positive integers, a(n) is the image of the polynomial that results when x+1 is substituted for x in the polynomial with image n.at n=40A334205