37488

Appears in sequences

• Numbers k such that phi(k) = bigomega(k)*tau(k)^2.at n=37A068540
• Numbers k such that k*((2^61-1)^2) - 1 and k*((2^61-1)^2) + 1 are twin primes.at n=10A099229
• Nonnegative values x of solutions (x, y) to the Diophantine equation x^2+(x+137)^2 = y^2.at n=10A129544
• Expansion of 1/(1-x^2-x^3+x^7-x^8+x^10).at n=49A174577
• Number of permutations p of 1,2,...,n satisfying p(i+6)-p(i)<>6 for all 1<=i<=n-6.at n=8A189285
• Number of ways to place n nonattacking composite pieces rook + semi-rider[6,6] on an n X n chessboard.at n=7A189848
• Number of 8X2 integer matrices with each row summing to zero, row elements in nondecreasing order, rows in lexicographically nondecreasing order, and the sum of squares of the elements <= 2*n^2 (number of collections of 8 zero-sum 2-vectors with total modulus squared not more than 2*n^2, ignoring vector and component permutations).at n=16A192708
• a(n) = 4*a(n-4) + 6*a(n-8) + 4*a(n-12) + a(n-16) for n>15, with the sixteen initial values as shown.at n=28A238188
• Number of odd chordless cycles in the n-antiprism graph.at n=20A301772
• Self-convolution of the Dedekind psi function (A001615).at n=45A307502
• Triangular array read by rows. T(n,k) is the number of n X n Boolean matrices with row rank k, n >= 0, 0 <= k <= n.at n=13A354741
• Number of integer partitions of n where 2*(number of distinct parts) >= (number of parts).at n=45A361394