22012

Appears in sequences

• Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite DOH = Dodecasil 1H [Si34O68].qR starting with a T1 atom.at n=13A019113
• Difference between 2^n and largest square strictly less than 2^n.at n=29A056007
• Values of r in Wolfram's iteration for sqrt(2).at n=14A095803
• a(n) = (5*n^3+12*n^2+n+6)/6.at n=29A114211
• Number of binary words whose (unique) decreasing Lyndon decomposition is into Lyndon words each with an odd number of 1's; EULER transform of A000048.at n=17A123916
• Take the base-3 representation of n, render that in decimal notation and take the base-3 representation of n again.at n=25A126135
• Infinite product of triangle A167271 columns.at n=23A167273
• Row sums of triangle A173302.at n=32A173303
• Numbers 3*n + 2 written in base 3.at n=73A190642
• Differences between odd powers of 2 and the next smaller square.at n=14A201125
• a(n) = floor(2^n / n^3).at n=28A233441
• Difference between 2^(2n-1) and the nearest square.at n=14A236564
• Triangle read by rows: T(n,k) is the coefficient A_k in the transformation Sum_{k=0..n} (k+1)*x^k = Sum_{k=0..n} A_k*(x-2)^k.at n=39A246797
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 305", based on the 5-celled von Neumann neighborhood.at n=31A271162
• Number of n-length words over a 6-ary alphabet {a_1,a_2,...,a_6} avoiding consecutive letters a_i, a_{i+1}.at n=6A277669
• Number of n-length words over an n-ary alphabet {a_1,a_2,...,a_n} avoiding consecutive letters a_i, a_{i+1}.at n=6A277673
• Ulam numbers k such that 4*k and 16*k are also Ulam numbers.at n=33A287634