98208

Appears in sequences

• Number of exterior points formed by extending diagonals of n-gon in general position.at n=30A005701
• Number of scalars which can be constructed from the Riemann tensor and metric tensor in n dimensions.at n=32A050297
• A Jacobsthal Fibonacci product.at n=11A093121
• a(n) = sum along n-th diagonal of A094102 (sloping downward to left).at n=45A094103
• Define a(1)=0, a(2)=2 then a(n) = 3*a(n-1) - a(n-2), a(n+1) = 3*a(n)-a(n-1) and a(n+2) = 3*a(n+1) - a(n) + 2.at n=12A105073
• G.f. satisfies: A(x)^2 = Sum_{n>=0} x^n * A(x)^((n+1)*(n+2)/2).at n=8A107592
• a(n) = n*(n-1)*(n-2)*(n+3)/12.at n=33A117662
• Number of different possible rows (or columns) in an n X n crossword puzzle.at n=24A130578
• Corresponding values of arithmetic means of divisors of numbers from A007340.at n=35A157848
• a(n) = (A000045(n)-A173432(n))/2.at n=26A173434
• a(n) = ADP(n) is the total number of aperiodic k-double-palindromes of n, where 2 <= k <= n.at n=24A181135
• a(n) = ((F(n-1)+F(n-2))-1)/2 if F(n) is odd, otherwise a(n) = ((F(n-1)+F(n-2))-2)/2, where F(n) = A000045(n) is the n-th Fibonacci number.at n=26A201864
• Denominator of Sum_{k=1..n} 1/(k(k+1)(k+2)(k+3)) = Sum_{k=1..n} 1/Pochhammer(k,4).at n=30A230340
• Number of partitions p of n such that 3*min(p) + (number of parts of p) is not a part of p.at n=45A238543
• Number of 2 X 2 matrices with entries in {0,1,...,n} and odd determinant with no entry repeated.at n=23A279483
• Expansion of 1/( (1 + x) * (1 - x^2*(1 + x)^2) ).at n=27A375372