69168

Appears in sequences

• Partial sums of second pentagonal numbers with even index (A049453).at n=32A051895
• 24 'Reverse and Add' steps are needed to reach a palindrome.at n=41A065318
• a(n) = 4*n^4 + 24*n^3 + 48*n^2 + 36*n + 8.at n=10A086302
• Expansion of eta(q)^2 / (eta(q^2) * eta(q^4)^6) in powers of q.at n=36A134414
• Expansion of phi(x) / f(-x)^6 in powers of x where phi(), f() are Ramanujan theta functions.at n=9A134415
• a(n) = prime(n)*T(n), where T = A000217.at n=31A196421
• Number of odd entries in the character table of the symmetric group S_n.at n=19A274691
• Variation on Fermat's Diophantine m-tuple: 1 + the GCD of any two distinct terms is a square.at n=29A274697
• Numbers of the form p^2 - 1 where p is a prime of the form 3*k-1 (A003627).at n=29A301812
• a(n) = 144*n^2 - 24*n (n>=1).at n=21A305072
• Numbers k such that the two perfect powers immediately adjacent to k^2 both have exponents greater than 2.at n=33A340643
• Integers k with at least one proper factorization for which the sum of the same fixed integer power >= 2 of the factors equals k.at n=24A380760
• Integers k with at least 1 proper factorization for which the sum of the squares of the factors equals k.at n=10A380902
• Let p = A002145(n) be the n-th prime == 3 (mod 4); a(n) is the multiplicative order of 2+-i modulo p in Gaussian integers.at n=29A385165