26277

Appears in sequences

• Number of trees with stability index n.at n=12A003429
• Numbers whose base-4 representation contains exactly four 1's and four 2's.at n=24A045109
• Triangle read by rows, M * Q; M = (T(n,k) = A155728(n-k+1)); Q = (A155728 * 0^(n-k)).at n=37A155729
• Beach-Williams Pell numbers of type pq (p,q primes).at n=19A212078
• Least number k >= 0 such that (n!-k)/n is prime.at n=54A245696
• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-1) + b(n-2) + n + 1, where a(0) = 1, a(1) = 2, b(0) = 3, and (a(n)) and (b(n)) are increasing complementary sequences.at n=16A294556