40747

Appears in sequences

• Column 4 of an array closely related to A083480. (Both arrays have shape sequence A083479).at n=13A089574
• E.g.f. satisfies: A(x) = exp( x*(1 + A(x)^2)/2 ).at n=6A202617
• Triangle read by rows: number of topologies of n nested circles intersecting at most as binaries, according to number of factors.at n=45A281348
• Numbers k such that 7*10^k + 69 is prime.at n=21A294484
• Number of integer partitions of n whose distinct parts have non-integer median.at n=46A360689