31498

Appears in sequences

• Numbers k such that 10^k - 117 is prime.at n=24A108654
• Partial sums of economical numbers A046759.at n=25A172460
• Number of partitions of n such that the number of parts is not a part and the number of distinct parts is a part.at n=45A241378
• Number of nX7 0..1 arrays with every element equal to 1, 2 or 4 king-move adjacent elements, with upper left element zero.at n=19A297857
• Number of maximal Golomb rulers of length n.at n=44A325683
• a(n) = 32*n^2 - 40*n + 10.at n=31A343578
• a(n) = 2*A276086(n) - A276086(A001065(n)), where A276086 is the primorial base exp-function, and A001065 is the sum of proper divisors of n.at n=52A379494