71953

Appears in sequences

• Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 0110-1111-0100 pattern in any orientation.at n=14A146592
• a(n) = 2*a(n-1) + 7*a(n-2) for n > 1; a(0) = 1, a(1) = 7.at n=8A164544
• Numbers n such that 30n-13, 30n-11, 30n-1, 30n+1, 30n+11, 30n+13 are all prime.at n=24A175683
• G.f.: q-cosh(x) evaluated at q=-x.at n=49A198201
• Expansion of Product_{k>=1} 1/((1 - x^k)*(1 - x^(3*k))).at n=36A318026
• The five digits of a(n) and their four successive absolute first differences are all distinct.at n=48A365257
• Number of integer compositions of n that are the first sums of more than one nonnegative sequence.at n=21A391682