17180000256
domain: N
Appears in sequences
- Number of types of Boolean functions of n variables under a certain group.at n=16A028402
- Smallest number > 1 equal to sum of n-th powers of its base-8 digits, or 0 if no such number exists (written in base 10).at n=16A033840
- a(-1) = 1; for n >= 0, a(n) = 2^n + 4^n = 2^n*(1 + 2^n).at n=18A063376
- 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=17A071930
- (4^n+2^n+0^n+(-2)^n)/4.at n=18A083885
- a(n) = 2^n + 4^n.at n=17A161168
- Number of degree n polynomials f with all nonzero coefficients equal to 1 such that f(k) is divisible by 4 for all integers k.at n=38A309846
- Table read by antidiagonals: T(n,k) is the number of tilings of the n X k grid up to horizontal and vertical reflections by an asymmetric tile.at n=30A368220
- Table read by antidiagonals: T(n,k) is the number of tilings of the n X k grid up to horizontal and vertical reflections by an asymmetric tile.at n=33A368220
- Oblong numbers of the form 2^k*(2^k - 1) or 2^k*(2^k + 1).at n=33A390325