279260

Appears in sequences

• n*10^7-1, n*10^7-3, n*10^7-7 and n*10^7-9 are all prime.at n=13A064982
• Number of compositions of n with exactly 5 transitions between different parts.at n=13A244717
• Number of edges in a figure made up of a row of n adjacent congruent rectangles upon drawing diagonals of all possible rectangles.at n=30A331757