2795520

Appears in sequences

• a(n) = 2^(n-4)*C(n,4).at n=11A003472
• a(n) = 2^(n-1)*(2^n - (-1)^n)/3.at n=12A003683
• Number of Barlow packings with group R3(bar)m(O) that repeat after 6n layers.at n=21A011955
• Sylvester dividends for A002605.at n=23A105608
• Starting a priori with the fraction 1/1, the denominators of fractions built according to the rule: add top and bottom to get the new bottom, add top and 9 times the bottom to get the new top.at n=10A110953
• a(n) = 2^n*tetranacci(n) or (2^n)*A001648(n).at n=10A127216
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 278", based on the 5-celled von Neumann neighborhood.at n=21A287489
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 342", based on the 5-celled von Neumann neighborhood.at n=21A287745
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 342", based on the 5-celled von Neumann neighborhood.at n=22A287745
• Positions of records in A344590.at n=19A344588
• Triangle read by rows: T(n,k) is the number of weakly connected oriented graphs on n labeled nodes with k arcs, n >= 0, k=0..n*(n-1)/2.at n=36A350732
• Triangle read by rows: T(n,k) is the number of oriented graphs on n labeled nodes with k arcs, n >= 0, k = 0..n*(n-1)/2.at n=37A350749