19896

Appears in sequences

• Generalized sum of divisors function: third diagonal of A060047.at n=35A060046
• Structured triakis tetrahedral numbers (vertex structure 4).at n=23A100175
• Triangle P, read by rows, such that P^3 transforms column k of P into column k+1 of P, so that column k of P equals column 0 of P^(3*k+1), where P^3 denotes the matrix cube of P.at n=41A113370
• Triangle, read by rows, given by the product R^2*Q^-1 = Q^3*P^-2 using triangular matrices P=A113370, Q=A113381, R=A113389.at n=32A114150
• Number of 8X8 arrays of squares of integers, symmetric under 90 degree rotation, with all rows summing to n.at n=20A156397
• Number of n X n arrays of squares of integers, symmetric under 90 degree rotation, with all rows summing to 20.at n=4A156474
• Magic constants of 4 X 4 magic squares which consist of consecutive primes.at n=3A173981
• Sum of the numbers already removed (including the target number) in the first jump of a Sieve of Eratosthenes table.at n=30A179654
• Triangle of coefficients of polynomials v(n,x) jointly generated with A210600; see the Formula section.at n=48A210601
• Number of length n+1 0..5 arrays with the sum of adjacent differences multiplied by some arrangement of +-1 equal to zero.at n=4A250164
• T(n,k)=Number of length n+1 0..k arrays with the sum of adjacent differences multiplied by some arrangement of +-1 equal to zero.at n=40A250167
• Number of length 5+1 0..n arrays with the sum of adjacent differences multiplied by some arrangement of +-1 equal to zero.at n=4A250170
• Numbers n representable as x*y + x + y, where x >= y > 1, such that all x's and y's in all representation(s) of n are perfect squares.at n=28A258366
• Magic sums of 4 X 4 semimagic squares composed of consecutive primes.at n=20A270864