147420

Appears in sequences

• Ooguri-Vafa invariants of disk degeneracies for brane III in the O(K) -> P^1 x P^1 geometry.at n=7A092708
• Ooguri-Vafa invariants of disk degeneracies for brane III in the O(K) -> P^1 x P^1 geometry.at n=5A092710
• Number of 3 X n 0-1 matrices avoiding simultaneously the right angled numbered polyomino patterns (ranpp) (00;1), (10;0) and (10;1).at n=14A099041
• a(n) = 3^4 * binomial(n+3, 4).at n=12A102741
• Array T(n,m) = 2*(2m+3)!*(4n+2m+1)!/(m!*(m+2)!*n!*(3n+2m+3)!) read by antidiagonals.at n=39A146305
• List of fixed points of the base-8 Kaprekar map A165090.at n=3A165094
• Consider the base-8 Kaprekar map n->K(n) defined in A165090. Sequence gives numbers belonging to cycles, including fixed points.at n=18A165095
• Consider the base-8 Kaprekar map n->K(n) defined in A165090. Sequence gives least elements of each cycle, including fixed points.at n=8A165099
• Smallest member of cycle corresponding to n-th term of A165107.at n=9A165108
• Largest divisor of n!/4 which is less than sqrt(n!)/2.at n=10A181899
• Numbers with prime factorization pqrs^2t^4.at n=14A190384
• Numbers k such that core(k) is equal to the sum of the proper square divisors of k, where core(k) = A007913(k).at n=13A225882
• Average of amicable pairs (x,y), ordered by the smaller value x given in A002025.at n=16A275315
• Average of amicable pairs (x,y), ordered by the sum x+y given in A259953.at n=16A275316
• Triangle read by rows. T(n,k) is the number of n X n diagonalizable matrices over GF(3) that have rank k, 0 <= k <= n, n >= 0.at n=12A297892
• a(n) = 3*n*(2^n - 1).at n=12A317404
• a(n) = Product_{d|n} A019565(d)^[moebius(n/d) = +1].at n=41A319680
• Numbers k such that A048675(sigma(k)) is equal to A048675(2*k).at n=19A331751
• Number of triangulations of a fixed hexagon with n internal nodes.at n=5A341854
• Inverse Moebius transform of tetranacci number (A000078).at n=21A357239