25300

Appears in sequences

• Fermat coefficients.at n=9A000972
• a(n) = floor(C(n,6)/7).at n=25A011797
• Theta series of A*_24 lattice.at n=42A023936
• Number of necklaces with 7 black beads and n-7 white beads.at n=19A032192
• a(n) = 2*binomial(n,4).at n=25A034827
• Schoenheim bound L_1(n,7,6).at n=18A036834
• T(n,7), array T as in A051168; a count of Lyndon words; aperiodic necklaces with 7 black beads and n-7 white beads.at n=19A051172
• Numbers n such that n^2 can be split into two nonzero squares (perhaps with leading zeros) in exactly two different ways.at n=10A054737
• Smallest a(n)>a(n-1) such that a(n)^2+a(n-1)^2 is a perfect square, a(1)=6.at n=38A076672
• Smallest a(n)>a(n-1) such that a(n)^2+a(n-1)^2 is a perfect square, a(1)=7.at n=34A076673
• Smallest a(n)>a(n-1) such that a(n)^2+a(n-1)^2 is a perfect square, a(1)=10.at n=34A076675
• Smallest a(n)>a(n-1) such that a(n)^2+a(n-1)^2 is a perfect square, a(1)=11.at n=32A076676
• Sum of n-th antidiagonal of A082191.at n=34A082195
• Triangle T(n,k) read by rows, given by [0, 1, 0, 1, 0, 1, 0, 1, 0, 1, ...] DELTA [1, 0, 2, 0, 3, 0, 4, 0, 5, 0, 6, 0, 7, ...] where DELTA is the operator defined in A084938.at n=51A086329
• Triangle read by rows of the numbers T(n,k) (n > 1, 0 < k < n) of set partitions of n of length k which do not have a proper subset of parts with a union equal to a subset {1,2,...,j} with j < n.at n=39A087903
• a(n) = A063997(n)/4.at n=30A088406
• a(n) = (1/24)*(n+1)*(n+3)*(n^2+22*n+88).at n=23A090950
• Average of 4 primes where the integer Schwarzian derivative is zero.at n=24A094903
• a(n) = (2/(n-1))*a(n-1) + ((n+5)/(n-1))*a(n-2) with a(0)=0 and a(1)=1.at n=44A096338
• a(n) = (n+1)^2*(n+2)*(5*n^2 + 15*n + 12)/24.at n=9A108676