47319

Appears in sequences

• Number of not-necessarily-symmetric n X 2 crossword puzzle grids.at n=11A034182
• Sum of the second moments of all partitions of n with weights starting from 1.at n=16A066187
• Prime(n)*prime(2*n)+prime(n)+prime(2*n).at n=33A072672
• Values of k such that {s(1),...,s(k)} is a palindrome, where {s(1),s(2),...} is the fixed point of the substitutions 0->1 and 1->110.at n=22A098894
• Number of arrangements of the partitions of n (e.g., 111 counts for 6).at n=8A101880
• Numbers k such that both the k-th and (k+1)-th primes have the same sum of digits squared but different sets of digits.at n=26A109183
• a(n) = 70*n^2 - 1.at n=25A158736
• G.f.: A(x) = exp( Sum_{n>=1} 3*A038500(n) * x^n/n ), where A038500 is the highest power of 3 dividing n.at n=41A161809
• Indices of the smallest of four consecutive triangular numbers summing up to a square.at n=5A202391
• G.f.: 1/(1-x) = Sum_{n>=0} a(n)*x^n*Product_{k=1..n+1} (1-x^k).at n=33A209405
• Number of m-shape ordered set partitions, square array read by ascending antidiagonals, A(m, n) for m, n >= 0.at n=44A260883