261888

Appears in sequences

• a(n) = n^2*(n^2 - 1)/4.at n=32A006011
• a(n) = product of all even numbers between n-th prime and (n+1)-st prime.at n=17A061216
• Number of strings of length n over GF(4) with trace 0 and subtrace 1.at n=10A073996
• Number of strings of length n over GF(4) with trace 1 and subtrace 0.at n=10A073997
• Number of strings of length n over GF(4) with trace 1 and subtrace x where x = RootOf(z^2+z+1).at n=10A073999
• Number of monic irreducible polynomials of degree 4 in GF(2^n)[x].at n=4A115490
• If an array is made of columns of -nacci sequences, fibo-, tribo- etc. all starting w. 1,1,2 etc, the NW to SE diagonals can be extended by computation. The above is diagonal 9. See A159741 for details.at n=10A159746
• Fibonacci 12-step numbers.at n=30A168083
• a(n) = 6*a(n-1) - 8*a(n-2) for n > 1; a(0) = 3, a(1) = 14.at n=8A171499
• Monotonic ordering of nonnegative differences 8^i-4^j, for 40>= i>=0, j>=0.at n=29A192168
• Even multiply-perfect numbers divided by 2.at n=8A219544
• Numbers m such that m divides sigma(2*m).at n=13A227302
• Triangle read by rows, whose row sums using Euler numbers are the unsigned even-indexed Bernoulli numbers (denominators).at n=12A229097
• a(n) = 2^(n+1) - (n-1)^2.at n=17A243860
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 193", based on the 5-celled von Neumann neighborhood.at n=17A286640
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 209", based on the 5-celled von Neumann neighborhood.at n=17A286700
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 449", based on the 5-celled von Neumann neighborhood.at n=17A288359
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 467", based on the 5-celled von Neumann neighborhood.at n=17A288441
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 617", based on the 5-celled von Neumann neighborhood.at n=17A289939
• Hyper-Wiener index of rows of unit cells on the face-centered cubic lattice.at n=10A302256