22786

Appears in sequences

• Base 5 digits are, in order, the first n terms of the periodic sequence with initial period 1,2.at n=6A037482
• Number of asymmetric (identity) trees with n nodes and 4 leaves.at n=41A055335
• G.f.: A(x) = exp(sum(n>=1, A084250(n)*x^n/n)), where A084250 lists the least distinct positive integers that allow A(x) to be an integer power series.at n=38A084251
• Number of nondecreasing arrangements of n nonzero numbers in -(n+4)..(n+4) with sum zero.at n=6A188330
• Number of nondecreasing arrangements of 7 nonzero numbers in -(n+5)..(n+5) with sum zero.at n=5A188337
• Number of binary words on {H,T} that end in THTH but do not contain the contiguous subsequence HTHH.at n=21A238644
• Poincaré series for invariant polynomial functions on the space of binary forms of degree 15.at n=10A293940
• Poincaré series for invariant polynomial functions on the space of binary forms of degree 20.at n=15A293942
• Number of regions in a Y-shaped polygon with equal arms of length n (see the Comments for definition).at n=12A335861
• Let P(m,k) = 1-(m-1)*...*(m-k+1)/m^(k-1) be the probability that at least two out of k people share a birthday out of m possible days. Sequence gives values of m for which P(m,k(m)) sets a new minimum, where k(m) is the smallest k such that P(m,k) > 1/2.at n=13A392222