22488

Appears in sequences

• a(n) = s(1)s(n) + s(2)s(n-1) + ... + s(k)s(n-k+1), where k = [ n/2 ], s = A000201 (lower Wythoff sequence).at n=45A025118
• Geometric mean of digits = 4 and digits are in nondecreasing order.at n=12A069518
• Union of A080105 and A080106.at n=40A080078
• a(n) = round(113*phi^n).at n=23A080105
• a(n) = 1728*n + 24.at n=12A157325
• a(n) = 625*n^2 - 2*n.at n=5A158373
• Third differences of A001521.at n=35A241576
• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-1) + b(n-2) - n, where a(0) = 1, a(1) = 3, b(0) = 2, b(1) = 4.at n=17A294417
• Solution of the complementary equation a(n) = 3*a(n-2) - b(n-2) + 4, where a(0) = 1, a(1) = 3, b(0) = 2, b(1) = 4, and (a(n)) and (b(n)) are increasing complementary sequences.at n=18A295140
• a(n) = 27*n^2/2 + 45*n/2 - 12 (n>=1).at n=39A304375
• a(n) is the smallest k such that k!'s prime(n)-smooth part is less than its prime(n+1)-rough part.at n=34A360316
• Number of compositions (ordered partitions) of n into distinct parts not greater than n/2.at n=28A368501
• Expansion of e.g.f. (1 - log(1-x))^3.at n=7A377394