42164

Appears in sequences

• Denominators of the convergents to the continued fraction of Pi^2/6.at n=11A080017
• Numbers n with property that for each single digit d of n, we can also see the decimal expansion of 2^d as a substring of n. Also n may not contain any zero digits.at n=24A135016
• Position of 5^n in A051037 (5-smooth numbers).at n=41A188427
• Number of arrangements of 4 nonzero numbers x(i) in -n..n with the sum of floor(x(i)/x(i+1)) equal to zero.at n=12A189500
• Constant term of the reduction by x^2 -> x+1 of the polynomial p(n,x) defined at Comments.at n=19A192969
• Number of permutations of length n sortable by 3 passes through a pop-stack.at n=10A293774
• Numbers k such that 8k+1, 12k+1 and 24k+1 are primes and the last two are also of the form x^2 + 27y^2, so the tetrahedral number T(24k+1) is a Fermat pseudoprime to base 2.at n=27A321867
• The base 10 numbers with a digit product > 0 and which when written in bases 3,4,5,6,7,8,9 have two or more other base representations with the same digit product.at n=19A331565
• Sum of the nonnegative terms in the n-th row of A365968.at n=12A377170