29837

Properties

Appears in sequences

• Number of partitions of n if there are two kinds of 1's and two kinds of 2's.at n=26A000097
• Expansion of 1/((1-2*x)*(1-x-2*x^3)).at n=13A003478
• Powers of cube root of 22 rounded up.at n=10A018041
• Polynomial extrapolation of 2, 3, 5, 7, 11, 13, 17.at n=13A061166
• Prime(n) and prime(n+4) use the same digits.at n=28A069796
• Table T(m,n) = (3^m + 5^n)/2, for m, n = 0, 2, 4, 6, ... read by antidiagonals downwards.at n=33A081458
• Define the n-omino graph to be the graph whose vertices are each of the n-ominoes, two of which are joined by an edge if one can be obtained from the other by cutting out one of the latter's component squares (thus obtaining an (n-1)-omino for most cases) and gluing it elsewhere. The sequence counts the edges in these graphs.at n=8A098891
• Numbers n such that P(13*n) is prime, where P(n) is the unrestricted partition number.at n=20A113518
• Numerators of the convergents of the continued fraction for Pi/sqrt(3) using the classical continued fraction for arctan(x).at n=4A123625
• Number of binary strings of length n with equal numbers of 000 and 001 substrings.at n=17A164137
• Integers k such that 2^(k-1) == 1 (mod k) and 2^(m-1) == 1 (mod m), where m = k*(A000265(k-1) - 1) + 1 and A000265 gives the odd part of its argument.at n=19A187849
• Numbers of the form (5^j + 9^k)/2, for j and k >= 0.at n=39A226794
• Numbers k such that there are exactly four biquadratefree powerful numbers (A338325) between k^2 and (k+1)^2.at n=27A338391
• Primes p such that (5*p+2)/3 is the square of a prime.at n=15A357199
• Prime numbers of the form A385986(1) + ... + A385986(k) for some k > 0.at n=33A385987
• Prime numbersat n=3232