715816960
domain: N
Appears in sequences
- a(n) = 2^(n-1)*(2^n - (-1)^n)/3.at n=16A003683
- Number of Barlow packings with group P3(bar)m1(O) that repeat after 2n layers.at n=28A011952
- Number of Barlow packings with group R3(bar)m(O) that repeat after 6n layers.at n=29A011955
- Central terms of the rows of the XOR difference triangle of the powers of 2 (A099884) so that a(n) = A099884(n, floor(n/2)).at n=29A099885
- 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=14A110953
- k-imperfect numbers for some k >= 1.at n=32A127724
- 2-imperfect numbers.at n=7A127725
- 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 22", based on the 5-celled von Neumann neighborhood.at n=30A285437
- 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 84", based on the 5-celled von Neumann neighborhood.at n=30A285774
- 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=29A287745
- 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=30A287745
- 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 510", based on the 5-celled von Neumann neighborhood.at n=30A288808
- 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 790", based on the 5-celled von Neumann neighborhood.at n=29A290419
- Imperfect numbers of the form 2^(2^k-1)*F_1*F_2*...*F_(k-1), where F is a Fermat number.at n=2A309553