32861

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has period 79.at n=25A020418
• a(n) = [ 3rd elementary symmetric function of {sqrt(k)} ], k = 1,2,...,n.at n=17A025194
• Number of starting positions of Nim with 2n pieces such that 2nd player wins. Partitions of 2n such that xor-sum of partitions is 0.at n=27A048833
• Triangle, read by rows, T(n, k) = binomial(n, k) for n < 2 and binomial(n, k) + 3^(n-1)*binomial(n-2, k -1) otherwise.at n=39A146987
• Triangle, read by rows, T(n, k) = binomial(n, k) for n < 2 and binomial(n, k) + 3^(n-1)*binomial(n-2, k -1) otherwise.at n=41A146987
• Number of 4-element nondividing subsets of {1, 2, ..., n}.at n=37A187491
• Boyd's Pisot-like sequence F(0,5,11).at n=21A274946
• Numbers k such that 305*2^k+1 is prime.at n=25A322922
• a(n) is the smallest number whose square uses all the digits but n.at n=6A347144