262656

Appears in sequences

• Taxi-cab numbers: sums of 2 cubes in more than 1 way.at n=19A001235
• Numbers that are the sum of 2 positive 9th powers.at n=7A003391
• Numbers that are the sum of at most 2 positive 9th powers.at n=12A004886
• Numbers that are the sum of at most 3 positive 9th powers.at n=23A004887
• Numbers that are the sum of at most 4 positive 9th powers.at n=39A004888
• Number of (n-1)-bead black-white reversible strings; also binary grids; also row sums of Losanitsch's triangle A034851; also number of caterpillar graphs on n+2 vertices.at n=19A005418
• Number of types of Boolean functions of n variables under a certain group.at n=8A028402
• Sums of 2 distinct powers of 8.at n=18A038484
• Sum of every 4th entry of row n in Pascal's triangle, starting at binomial(n,2).at n=20A038505
• Number of elements of GF(2^n) with trace 0 and subtrace 0.at n=20A038518
• Number of 2n-bead balanced binary strings, rotationally equivalent to complement.at n=18A045654
• Number of 2n-bead balanced binary necklaces which are equivalent to their reverse, complement and reversed complement.at n=38A045674
• Sum of two (possibly negative) cubes in at least 3 ways.at n=30A051383
• Expansion of 2*(1-x-x^2)/((1-2*x)*(1-2*x^2)).at n=18A052957
• Sums of two powers of 8.at n=24A055259
• a(-1) = 1; for n >= 0, a(n) = 2^n + 4^n = 2^n*(1 + 2^n).at n=10A063376
• Number of words of length 2n in the two letters s and t that reduce to the identity 1 by using the relations ssTT=1, ststSS=1 and ststTT=1, where S and T are the inverses of s and t, respectively (i.e., sS=1 and tT=1). The generators s and t and the three stated relations generate the quaternion group Q4.at n=9A071930
• Smallest oblong number having n prime divisors (with multiplicity).at n=12A083001
• (4^n+2^n+0^n+(-2)^n)/4.at n=10A083885
• Number of divisors of n! that are coprime to n.at n=39A095997