19390

Appears in sequences

• Weird numbers: abundant (A005101) but not pseudoperfect (A005835).at n=33A006037
• Even 10-gonal (or decagonal) numbers.at n=35A028994
• Numbers k such that phi(k)+sigma(k) is a perfect cube.at n=10A061366
• Unitary weird numbers: unitary abundant (A034683) but not unitary pseudoperfect (A293188).at n=30A064114
• Decagonal numbers divisible by 10.at n=14A117797
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 1, 1), (0, 0, -1), (0, 1, 1), (1, -1, 1)}.at n=9A148862
• The sum of all the entries in an n X n Cayley table for multiplication in Z_n.at n=34A160255
• Number of nondecreasing arrangements of n+3 numbers in 0..3 with each number being the sum mod 4 of three others.at n=43A183898
• Number of (w,x,y) with all terms in {0,...,n} and 2*|w-x| > max(w,x,y) - min(w,x,y).at n=30A213045
• Bi-unitary weird numbers: bi-unitary abundant numbers (A292982) that are not bi-unitary pseudoperfect (A292985).at n=35A292986
• Infinitary weird numbers: infinitary abundant numbers (A129656) that are not infinitary pseudoperfect numbers (A306983).at n=36A306984
• Number of multisets of exactly three nonempty binary words with a total of n letters such that no word has a majority of 0's.at n=10A316404
• Number of parts in all partitions of n with largest multiplicity two.at n=35A320372
• Number of ways to write n as an ordered sum of 7 squarefree numbers.at n=16A341067
• Nonexponential weird numbers: nonexponential abundant numbers (A348604) that are not equal to the sum of any subset of their nonexponential divisors.at n=27A348631
• (1+e)-weird numbers: (1+e)-abundant numbers k such that no subset of the aliquot (1+e)-divisors of k sums to k.at n=28A349285