5845851

Appears in sequences

• Ninth column of triangle A067417.at n=5A067424
• Numbers of the form (9^i)*(11^j), with i, j >= 0.at n=29A108687
• a(n) = 11*3^n.at n=12A120354
• Numbers which can be expressed as the product of numbers made of only nines.at n=31A161147
• Composite numbers m such that (4^m - 2^m + 8*m^2 - 2) / (2*m*(2*m + 1)) is an integer.at n=25A235540
• Self-inverse permutation of nonnegative integers, A075158-conjugate of blue code: a(n) = 1 + A075157(A193231(A075158(n-1))).at n=58A245454
• Let S = smallest missing positive number, adjoin S, 3*S, 9*S, 27*S, 81*S, ... to the sequence until reaching a term that has S as a substring; reset S to the smallest missing positive number, repeat.at n=44A331631
• The number of nonequivalent root ancestral configurations in a recursively defined family of gene trees and species trees with at least n = 9 leaves, in which for n >= 12 leaves, 3-leaf trees are successively added at the root of the tree with n-3 leaves.at n=34A355118
• a(n) is the smallest positive integer k such that A002325(k) = n.at n=25A374294