19439

Appears in sequences

• Numbers whose base-3 representation contains no 0's and exactly one 1.at n=39A044966
• Total number of right truncatable primes in base n.at n=30A076586
• a(1) = 1, a(2) = 2; for n >= 2, a(n+1) = a(n) + sum of the unique prime factors of a(n).at n=26A096460
• Numbers k such that either k or k+1 is divisible by the numbers from 1 to 10.at n=29A131663
• a(n) = 60*n^2 - 1.at n=17A158670
• Numbers having no 0's and not more than one 1 in their representation in base 3.at n=47A188341
• Number of (1+1) X (n+1) arrays of permutations of 0..n*2+1 filled by rows with each element moved a city block distance of 0 or 2, and rows and columns in increasing lexicographic order.at n=15A263603
• Number of Schur rings over Z_{3^n}.at n=8A270785
• a(n) = n^8 + 7*n^7 + 34*n^6 + 111*n^5 + 275*n^4 + 511*n^3 + 703*n^2 + 623*n + 13.at n=2A270872
• Number of distinct cardinalities of orbits of lattice points under the automorphism group of the n-dimensional integer lattice.at n=39A270950
• Array T(n,k) of number of Schur rings over Z_{p^n} where n>=1 for p odd and k-th prime (by descending antidiagonals).at n=35A320948