33516

Appears in sequences

• 30 'Reverse and Add' steps are needed to reach a palindrome.at n=13A065319
• Numbers k such that k^6 + 1091 is prime.at n=19A066386
• Triangle read by rows: T(n,k) is the number of noncrossing trees with n edges in which the leftmost child of the root has degree k.at n=39A101401
• Exponential abundant numbers: integers k for which A126164(k) > k, or equivalently for which A051377(k) > 2k.at n=34A129575
• a(1) = 1. a(n) = a(n-1) + a(m), where m is the largest term of the sequence {a(k)} which is less than n.at n=36A133488
• Numbers k such that k and k^2 use only the digits 1, 2, 3, 5 and 6.at n=53A136974
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 0, 1), (0, 1, -1), (0, 1, 1), (1, 0, 1)}.at n=8A150545
• a(n) = 1458*n - 18.at n=22A157508
• Number of n X n arrays of squares of integers summing to 35.at n=1A159435
• Numbers with prime factorization pq^2r^2s^2.at n=18A189344
• Nonsquare numbers whose sum of proper square divisors is a square greater than 1.at n=11A232555
• Numbers whose sum of proper square divisors is a square greater than 1.at n=14A232556
• Number of partitions of 4n into 4 parts.at n=41A238340
• a(n) = 19*n^2.at n=42A244631
• Number of partitions of 6n into exactly 4 parts.at n=28A256328
• Number of partitions of 7n into exactly 4 parts.at n=24A256329
• Numbers k such that the decimal expansions of both k and k^2 have 1 as smallest digit and 6 as largest digit.at n=27A257197
• Integers m such that sigma(m)^2 is divisible by m.at n=42A263928
• a(n) = n*(n + 11)*(n + 22)*(n + 33)/24.at n=16A264448
• a(n) = n*(n + 11)*(n + 22)*(n + 33)*(n + 44)/120.at n=5A264450