698880

Appears in sequences

• Theta series of laminated lattice LAMBDA_13^{mid}.at n=7A006916
• a(n) can be expressed as the difference of the squares of consecutive primes in just three distinct ways.at n=28A090783
• Coefficients of polynomials D(n,x) related to median Euler numbers.at n=22A098277
• Coefficients of series whose 24th power is the theta series of the Leech lattice (see A008408).at n=3A108093
• a(n) = (32/2)*(n-1)*(n-2)*(n-3)*(n-4).at n=16A134175
• a(n) = n*(n+2)*(n+4)*(n+6).at n=25A190577
• Numbers n such that there are three distinct triples (k, k+n, k+2n) of squares.at n=20A222154
• Numbers other than prime powers divisible by the sum and the sum of squares of their prime divisors.at n=21A268417
• Diagonal of the rational function 1/(1 - (w*x*z + x*y*z + w*y + x*y + z)) [even-indexed terms only].at n=3A275049
• Triangular array read by rows. T(n,k) is the number of rooted labeled trees on n nodes with exactly k vertices whose unique descendent is a leaf, n >= 1, 0 <= k <= floor((n-1)/2) + delta_{2,n}.at n=19A284417