22360

Appears in sequences

• Sum of cubes of unitary divisors of n.at n=27A034677
• Number of partitions of 5n such that cn(1,5) = cn(4,5) <= cn(0,5) = cn(2,5) = cn(3,5).at n=14A036889
• Base 7 digits are, in order, the first n terms of the periodic sequence with initial period 1,2,2.at n=5A037548
• Numbers whose base-7 representation contains exactly four 2's.at n=35A043404
• Number of 2n-bead balanced binary strings, rotationally equivalent to reverse, inequivalent to complement and reversed complement.at n=13A045658
• Number of 2n-bead balanced binary strings of fundamental period 2n, rotationally equivalent to reverse, inequivalent to complement and reversed complement.at n=13A045667
• Numbers k such that k divides the (right) concatenation of all numbers <= k written in base 14 (most significant digit on right).at n=18A061943
• a(n) is the number of terms in the expansion of (x+y+z)*(x^2+y^2+z^2)*(x^3+y^3+z^3)*...*(x^n+y^n+z^n).at n=19A086796
• Number of leg-hypotenuse twin Pythagorean triples < 10^n.at n=8A101904
• Integer part of Lorentz gamma factor = 1/sqrt(1 - (beta)^2) for beta = 0.9999...(with 9 appearing n times) = 1 - 10^(-n).at n=8A109999
• Number of permutations of 3 indistinguishable copies of 1..n arranged in a circle with exactly 3 adjacent element pairs in decreasing order.at n=3A151591
• a(n) = (4/3)*u*(u^3+6*u^2+8*u-3) where u=floor((3*n+5)/2).at n=4A160451
• Composite numbers k such that (Bell(k+1) - Bell(k)) mod k = 1.at n=7A179279
• a(n) = n*(14*n - 1).at n=40A195024
• Coefficients of powers of x^2 of polynomials, called h(2,n,x^2), appearing in a conjecture on alternating sums of fifth powers of odd-indexed Chebyshev S polynomials stated in A220671.at n=37A220672
• Number of nX5 0..2 arrays with no element equal to zero plus the sum of elements to its left or zero plus the sum of elements above it or zero plus the sum of the elements diagonally to its northwest, modulo 3.at n=13A240036
• Convolution of A006068 (inverse of Gray code) with itself: a(n) = Sum_{k=1..n+1} A006068(k) * A006068(1+n-k).at n=46A268721
• Number of binary palindromes of length 2n+1 having no (7/3)+ powers.at n=51A279611