87040

Appears in sequences

• Bisection of A002470.at n=28A002287
• Number of Barlow packings with group P3(bar)m1(S) that repeat after 2n layers.at n=19A011951
• Number of Barlow packings with group P3(bar)m1(O) that repeat after 2n layers.at n=15A011952
• Theta series for 10-dimensional 4-modular lattice Q10 with minimal norm 4.at n=9A037219
• Number of degree-n irreducible polynomials over GF(4) with trace 0 and subtrace 0.at n=11A074031
• Triangle read by rows: T(n,k) number of tilings of a 2n X 3 grid by dominoes, 2k of which are in a vertical position (0<=k<=n).at n=62A123519
• Terms of A181666 of the form 3*k+1.at n=28A172126
• Numbers with 44 divisors.at n=12A175751
• Number of 5 X n 0..1 arrays avoiding 0 0 0 and 1 1 1 horizontally and 0 0 1 and 1 0 1 vertically.at n=7A208381
• Number of nX2 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of elements above it or zero plus the sum of the elements diagonally to its northwest, modulo 4.at n=11A240371
• Records values in A072994.at n=69A251642
• Numbers n such that each reduced Collatz trajectory (mod p): (n, T(n), T(T(n)), ..., 4, 2, 1) / pZ, where the odd prime p is the number of iterations needed to reach 1, contains exactly the p-1 values {1, 2, 3, ..., p-1}.at n=8A267435
• Expansion of x^4*(5 - 16*x + 13*x^2)/(1 - 2*x)^4.at n=13A268587
• Values of A007692(n) that are not of the form x^2 + y^2 + z^2 where x, y, z are nonzero integers.at n=10A273123
• Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 35", based on the 5-celled von Neumann neighborhood.at n=16A278346
• Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 107", based on the 5-celled von Neumann neighborhood.at n=18A278901
• Numbers that are sums of consecutive powers of 4.at n=39A309759
• Numbers m such that all elements of the Collatz trajectory occur in the divisors of m.at n=37A323097
• Heinz numbers of integer partitions whose product of parts is one greater than their sum.at n=22A325041
• Product_{n>=1} (1 + a(n)*x^n/(n!)^2) = BesselI(0,2*sqrt(x)).at n=5A348207