18327

Appears in sequences

• Frobenius number of the numerical semigroup generated by four consecutive tetrahedral numbers.at n=12A069761
• Numbers k such that k^5 + 4^k is prime.at n=9A075982
• Ulam's spiral (ENE spoke).at n=34A143856
• The number of times a point sum n is attained in all 7^6 permutations of throwing 7 dice.at n=14A166322
• The number of times a point sum n is attained in all 7^6 permutations of throwing 7 dice.at n=21A166322
• Number of (w,x,y) with all terms in {0,...,n} and w<=x+y and x<=y.at n=34A212983
• a(n) = (n + 1)*(20*n^2 + 19*n + 6)/6.at n=17A220084
• The Wiener index of the dendrimer D_1[n], defined pictorially in the A. R. Ashrafi et al. reference.at n=1A224429
• a(n) = n*(n + 5)*(n + 7)/6 + 1.at n=44A323221
• Triangle read by rows: T(n, k) is the number of cycles of length n with k descents in a complete graph on n nodes.at n=17A387937
• Triangle read by rows: T(n, k) is the number of cycles of length n with k descents in a complete graph on n nodes.at n=18A387937