80313

Appears in sequences

• Numbers that are the sum of 3 positive 7th powers.at n=23A003370
• a(n) = 1^n + 3^n + 5^n.at n=7A074507
• The hyper-Wiener index of the nanostar dendrimer NS[n], defined pictorially in the Karbasioun-Ashrafi-Diudea reference.at n=1A221007
• Recurrence a(n) = a(n-2) + n^M for M=7, starting with a(0)=0, a(1)=1.at n=5A231306
• Sum of the 7th powers of the odd proper divisors of n.at n=14A352035
• The distinct values, in order of appearance, of A381087.at n=14A378138
• The smallest positive integer that produces a product that contains the digit 2 when multiplied by 2 a total of n times.at n=25A381087
• The smallest positive integer that produces a product that contains the digit 2 when multiplied by 2 a total of n times.at n=26A381087
• The smallest positive integer that produces a product that contains the digit 2 when multiplied by 2 a total of n times.at n=27A381087
• The smallest positive integer that produces a product that contains the digit 2 when multiplied by 2 a total of n times.at n=28A381087
• a(n) = the smallest positive integer that produces a product that contains the digit 2 when multiplied by 2 at most n times, and where a further multiplication by 2 produces a number that does not contain the digit 2. Set a(n) = -1 if no such number exists.at n=28A381183