39393

Appears in sequences

• Period of 1/n in sequence A033938.at n=14A033939
• Palindromes expressible as the sum of 3 consecutive palindromes.at n=31A046498
• Number of isolated-pentagon (IPR) fullerenes with 2n vertices (or carbon atoms).at n=35A046880
• Numbers whose consecutive digits differ by 6.at n=33A048408
• Split positive integers into extending even groups and sum: 1+2, 3+4+5+6, 7+8+9+10+11+12, 13+14+15+16+17+18+19+20, ...at n=27A061317
• Numbers with at least 2 distinct digits and whose "rotations" (including the number itself) are multiples of these digits; repeated digits allowed but digit 0 not allowed.at n=32A066484
• Numbers n such that n divides 2^n^2 + 1.at n=26A093546
• Numbers k that divide 2^(k^3) + 1.at n=27A093665
• Undulating Harshad numbers: numbers divisible by the sum of their own digits with decimal expansions in an abab...ab pattern.at n=49A129120
• Triangle T(n, k, q) = binomial(n, k) + q^n*binomial(n-2, k-1) - 1 with T(n, 0) = T(n, n) = 1 and q = 3, read by rows.at n=38A173047
• Triangle T(n, k, q) = binomial(n, k) + q^n*binomial(n-2, k-1) - 1 with T(n, 0) = T(n, n) = 1 and q = 3, read by rows.at n=42A173047
• Integers expressible as x^3 + 2*y^3 (x, y > 0) in two ways.at n=13A219725
• Total sum of parts of multiplicity 4 in all partitions of n.at n=39A222732
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 289", based on the 5-celled von Neumann neighborhood.at n=40A271127
• Numbers with digits 3 and 9 only.at n=40A284964