72813

Appears in sequences

• Crystal ball sequence for hexagonal close-packing.at n=27A007202
• a(n+1) is the smallest number > a(n) such that the digits of a(n)^2 are all (with multiplicity) contained in the digits of a(n+1)^2, with a(0)=1.at n=32A014563
• Numbers k such that 199*2^k-1 is prime.at n=44A050851
• a(n) = smallest number greater than a(n-1) having a largest proper divisor that is greater than and coprime to a(n-1); a(1) = 1.at n=42A098144
• Number of compositions of n into parts with distinct multiplicities and with exactly nine parts.at n=39A321779